Yup, 2 stupid calls screwed the Rams.
McVay should had just kicked the extra point instead of going for 2 pts after that 4th quarter TD. The Rams would of had a 2 point lead and even after a Buffalo TD, the Rams another TD, they would of had just a 5 or 6 point lead. A TD and extra point would have won the game in regulation for the Rams.
Secondly, on the 3rd and 5 before the OT field goal, why are you running the ball? You're not going to get a first down and you need at least another 7-10 yards to be in field goal range for Mevis. That 3rd down play should have been a pass to try and get a first down.
The sorry special teams play and McVay's play calling on these 2 plays cost the Rams the game/
So, I do think the Rams should have kicked the extra point as well, because I subscribe to "don't go for two until its the last score" so you dont end up chasing points.
That said....here is how that would have played out:
Rams kick XP, go up 21-19
Bills score and go up 26-21
Rams score with 7-ish minutes to go, at that point, you do probably have to go for two - it would be 27-26. 7 minutes to go. So we go for two and don't get it. The Bills then score, go for two and get it and we're in the exact same spot, 34-27.
So I think it played out the same. There is no team on the planet that kicks an extra point when up 27-26 with 7 minutes to go in the game. That's the point where you just have to do it.