The results of both of those NFL Divisional Champs games prove yet again that the Canadian ruleset makes for a fairer, more exciting game. I much prefer the old school two 5 minute OT halves that the CFL had, where all phases of the game were present, than the current “shootout”, but even that is better than functionally leaving it up to a coin flip, as per the current NFL rules. Unbelievable that PI is not challengeable in the NFL! That one was so blatant!
As for the challenge rule, I’m fine with unlimited challenges until you lose a challenge. And when you do lose the challenge, the book gets thrown at you - delay of game penalty, plus loss of timeout(s),plus loss of the right to challenge any further calls that game. That coach better be damn sure he’s right before throwing that flag.