By Frankie Taddeo,SI Betting Staff Our betting experts reveal the AFC and NFC championship games player props they are targeting. It is hard to believe, but NFL fans only have three games remaining this season. Two are exciting championship games featuring the playoff-experienced Chiefs, the young, upstart Bengals, the explosive Rams and the smash-mouth 49ers. Among the four remaining clubs are a host of star players sports bettors can invest in, ranging from Patrick Mahomes, Tyreek Hill and Travis Kelce to Joe Burrow, Joe Mixon and Ja’Marr Chase in the AFC championship game. Later in the day …