Originally Posted by
NoStressHere
In defense of WN - on their web site they show if you are changing planes or not on their website when booking.
Also in defense of WN, through passengers are able to remain onboard when it's the same flight number, or are the first to board in the case of a plane change. I'm not aware of any cases where DL lets people stay onboard when it's the same plane (but of course it matters less with assigned seating).