Funny enough that was one of the first things i thought of watching the game. Being one of the unlucky souls who watched the PPV live where Hart died, the mood/tone after Hamlin got hurt was painfully similar. Football players, usually stone faced and dialed in looking shellshocked or inconsolable, the general eerie silence from the crowd, talking heads/announcers trying their best to do their job despite what they just saw.
Fortunately, the NFL made the right call canning the game for the night. WWE did not and their performers were forced to go on live TV, some of them visibly shaken/in tears. Perhaps worse was the fact the part of the ring where Hart hit was still busted and bloody.
Hopefully Hamlin's story has a better ending.