So how risky or doable is a 55min connection from DL to AA? Of course separate tickets, but will just have a backpack with me and I'm a fast walker. Will be in F so theoretically should be off quick.
DL arriving from Seattle at 8:26pm, AA departing to JFK at 9:21pm. I'm assuming easiest is landside?

And I'm aware any delay on the inbound will basically leave me SOL