On sneaks, #Eagles had consistently--for years now--used TWO pushers (Saquon+Goedert), who in effect protected Jalen from guys coming in from the sides.
After the fails vs Detroit, they debuted this single pusher look last week in Dallas, which left the sides more vulnerable.

Always hard to tell what the coverage details are on these bootlegs which distort the coverage so much with everyone playing run, but my guess is Sydney Brown is supposed to match number 2 running vertical right at him rather than chase the flat which DeJean is already chasing.

Not really relevant : when it happened.
Relevant: the play itself.

You can see the OL is blocking for QB Draw on the 2PC, which explains the quick pressure. The routes on the left also look like clear-out routes for QB Draw.

(And AJ is open just as Jalen starts looking away from him.)
#Eagles