‘No, the Bills’ offense didn’t look much — if at all — better against Pittsburgh than in last week’s preseason-opening loss to the Bears, but that reasonably had a lot to do with coach Sean McDermott’s cautious decision to rest Allen. That call, according to McDermott, had everything to do with a heavy storm that pounded Acrisure Stadium with rain before Saturday night’s game. Not wanting to take chances with the franchise’s quarter-billion-dollar man on a wet grass field, the Bills kept Allen on the sidelines in a ballcap and instead started Mitchell Trubisky alongside the rest of the first-team offense.’