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The culmination of the NFL playoffs is fast approaching, with only four teams left in the hunt for this year's Lombardi Trophy. Those four -- the Kansas City Chiefs, San Francisco 49ers, Detroit Lions and Baltimore Ravens -- certainly have a lot going for them, just one step away from an appearance in Super Bowl LVIII, which will be broadcast on CBS, Nickelodeon and Paramount+.

But just because we've reached the conference championships doesn't mean these contenders are devoid of lingering concerns. Here are the biggest questions facing each of the four teams still in the mix for the Super Bowl:

Chiefs: Are Mahomes' weapons truly enough?

There's no denying Kansas City has flipped a switch down the stretch. Patrick Mahomes has settled in while leaning almost exclusively on the trio of Travis Kelce, Isiah Pacheco and emergent rookie Rashee Rice. And it's worked. But the Ravens are a different breed when it comes to defense, at least compared to the Bills and Dolphins. No team's surrendered fewer points this year, and stalwarts like Roquan Smith swarm to the ball.

What if Rice is blanketed on the perimeter? Are Kelce and Pacheco, who thrive more as grind-it-out chain-movers than field-stretchers, capable of carrying the day? It's possible. But for much of 2023, remember, Mahomes' chief issue was simply finding a reliable outlet when he needed one. The Ravens could inflame that.

49ers: Can they survive more adversity?

Prodding at San Francisco for barely escaping a Packers comeback feels a bit like nitpicking; this is still a 13-5 team (including playoffs) with enviable infrastructure, including a coach in Kyle Shanahan who's now been to four NFC title games in five years. But anyone with eyes could see that young quarterback Brock Purdy was more finnicky than usual against Green Bay. Whether it was due primarily to the rainy conditions, the absence of a healthy Deebo Samuel or pressure from the Jordan Love-led Pack isn't entirely relevant. Because whatever you think of the Lions, Detroit is destined to make the NFC title clash a fight.

Will Samuel be at full speed? Can Purdy build off a calmer finish to his otherwise erratic outing? And will Shanahan stop bending conservative in key spots? We all know this contender has the all-star talent to win it all, but time and again, they've suggested they're built to play from ahead, not the other way around.

Lions: Can they keep Jared Goff clean?

At this point, few actually doubt Goff's ability to play top-level ball in the cozy confines of Ford Field. But away from home, the QB's been significantly less comfortable and/or effective. The same can be said of his production -- or lack thereof -- when pressured; his nine interceptions against pressure rank second worst among all QBs this year. Now, the 49ers haven't been nearly as dominant as expected up front and off the edge, failing to sack Jordan Love even once in the wild-card round. But they've still got a tenacious defense headlined by opportunistic vets like Fred Warner, heightening the stakes. And with center Frank Ragnow banged up at the heart of Detroit's line, all eyes will be on Goff's pocket and his composure within it.

The run game plays a pivotal role here as well. Both David Montgomery and Jahmyr Gibbs have been successful in tandem. But the 49ers also boast one of the NFL's stingiest units defending the ground game. If Dan Campbell and Ben Johnson want any shot at upsetting the NFC's No. 1 seed on the road, they'll likely need to find ways to get Goff into a groove early.

Ravens: Can they start fast?

Baltimore cruised to a 34-10 win over the Texans, but only after an uneven first half that saw Houston hang around while sending the blitz on MVP favorite Lamar Jackson. There may not be as much grace afforded by the Chiefs' defense, which is arguably the toughest of the Patrick Mahomes era. K.C. has more sacks than every team except Baltimore, and its pressure rate -- 27.8% -- ranks second in the NFL, with Chris Jones and George Karlaftis leading the way in the trenches. Jackson obviously has the legs to avoid trouble, but he'll likely need more than a few electric scrambles to outlast Mahomes and Co. Tight end Mark Andrews' anticipated return should also help as Todd Monken's attack looks to apply pressure to K.C. out of the gate.

Another reason a hot start is imperative for Baltimore: Not so dissimilar to the 49ers, this is a team well-positioned to maintain a lead. Jackson is part of an always-strong rushing group that's capable of burning clock and controlling the ball, and the Roquan Smith-led defense has the firepower and flexibility to chip in on the other side.