EAST RUTHERFORD, N.J. (AP) — Jaxson Dart was getting checked for a concussion during the New York Giants’ prime-time game against Philadelphia, and Brian Daboll was running out of patience.

The coach pulled back the flap of the blue medical tent on the sideline and yelled inside to ask when his rookie quarterback’s evaluation would be done. Running back Cam Skattebo also barged in while Dart was getting examined, and the next morning, the NFL launched an investigation into how the protocol was followed.

Hours before that incident, the league pulled back the curtain — literally — for a small group of reporters to learn how game-day medical processes like concussion evaluations and emergency procedures work.

“It’s a little roomier in here than you might think,” NFL Chief Medical Officer

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