Multiple coaches have won challenges on plays exactly like that in recent weeks. For them, it didn't matter that the ball moved a little. For us, it does matter.
They had already substituted. The refs were allowing them to reshuffle after they were already in formation. Which is not something they need to allow.
Because Allen under center telegraphs a run play. He's rarely under center for pass plays. Something that should have been addressed during training camp but here we are.
Someone else said we subbed late so they were allowing Miami to sub. I don't know if that's accurate but they still allowed way too much time for Miami.