People have their reservations about KC Three-Peating this year. However, if you break down the potential opposition, the path is not as challenging as it may seem.
AFC (Biggest Threats):
Ravens
Steelers
Bills
At the most, they would play 2 of these teams. Also, KC is still #1 in the AFC and could remain that way come playoff time.
NFC (Biggest Threats):
Lions
Packers
Eagles
Vikings
They only have to play one of these teams if they make it to the SB. They're not going to play both the "red hot Lions" and the "red hot Eagles"
Also:
Houston has regressed
No Joe Burrow to worry about
No 49ers to worry about