Originally Posted by
spartacusmcfly
It happened at the same time they added SFO/LAX transcons to JFK.
Those weren't related. JFK service resumption was March 2021, but here is a thread predating that—
BOS-SFO no longer Premium Transcon Service? Temporary? Permanent?
—and a post earlier than that alluding to removal of lie-flats from the route—
https://www.flyertalk.com/forum/32468972-post701.html.