President Joe Biden says he spoke "at length" with the mom and dad of Damar Hamlin ... after their son went into cardiac arrest on the field during Monday Night Football.
POTUS briefly spoke to the media in Kentucky before hopping aboard Air Force One ... when he revealed he had a conversation with the Hamlin fam.
46 was also asked whether football was just too dangerous ... in the wake of the terrifying medical emergency.
“Look, the idea that you're gonna have, look you've got guys that are 6'8, 340 pounds running a 4.