I snuck in an PHX-SFO-EWR itinerary last weekend but gate agent moved me to the nonstop (PHX-EWR) after mechanical delay on the PHX-SFO.
Just posting this because if one insists on lie flat via LAX/SFO, not accepting the nonstop (PHX-EWR) in case of irrops will mean spending the night in Phoenix. I am working under the assumption 752s aren't frequent on this route, as all of my flown flights this year between EWR and PHX have been nothing but 738/9/Max.