I don't think our playcalling was too conservative against the BIlls. We passed annoyingly on almost every 3rd and short and called plenty of deep passes.
The situational decisions were too conservative. Probably the 4th or 5th time that Rivera has cost us a game by punting or kicking on 4th and short when we could put the game away by going for it.
The playcalling was bad, but I wouldn't describe it as conservative. Shula called plays with slow developing routes, where the o-line had to hold their blocks while receivers ran 15 yards deep and made their moves and their cuts and tried to get open. They formed a pocket for Cam, but they were unable to hold it long enough for the plays that Shula was calling.
The two scoring drives both happened when Shula sped up the playcalling, called quick passes (not even necessarily short routes, just ones that weren't so involved and slow), and Cam was able to get the ball out efficiently without getting hit on every snap.
After those scoring drives happened, Shula was unable to look at them and see what worked and what didn't, so he went right back to slowing down the pace and the offense collapsed again.
There was also a problem with actually getting to the line of scrimmage. Even when we were running the no huddle, it seemed like Cam was racing the clock trying to read the protections and call them out and snap the ball. I don't know if Shula was slow to get the play calls in, or the team was apathetic about getting up to the line, but they looked like snails compared to the Seahawks or 49ers or other teams running a lot of no huddle and snap the ball with 10 seconds left on the clock. The whole point of a no huddle is to catch the defense off guard. It defeats the entire purpose if you let the playclock get to 01 or 00 before you snap it anyways.