Hi gang, I'll be on the AS PDX-DCA nonstop next month and am looking to book a separate ticket DCA-BOS on US. Having never connected thru DCA before, I read each pier has its own security checkpoint and no airside connections, so I'd need to re-clear TSA albeit with PreCheck in hand. If everything is on time, PDX-DCA arrives 5:40 pm. I can book the US Shuttle at 6:30 pm or 7:30 pm. Is 6:30 pm pushing it?

Cheers,
Tom