NFL Championships History: Has a team ever switched from NFC to AFC?
NFC and AFC Championship Games: What to know about 49ers-Eagles, Bengals-Chiefs - The Athletic
NFL conference championship games: Times, dates, odds, picks as Chiefs face Bengals, Rams battle 49ers
AFC vs NFC - Difference and Comparison
Bills-Chiefs neutral site AFC Championship Game in play; Bengals avoid coin toss with win over Ravens
National Football Conference (NFC)
Visual of every NFC champion since 1970 : r/nfl
Could This Year's NFC South Be the NFL's All-Time-Worst Division? - The Ringer
Rematches in conference title games. Same results? Read on
NFL Conference Championships: Everything you need to know