Look closely. TAP is marketing flights that is it not actually operating. For example, TAP offers a flight from San Francisco to Ponta Delgada, but it's on JetBlue SFO-BOS and then over to PDL. Guess which infamous airline owned by the Azorean government is operating the flight to PDL?
Buying the ticket through TAP but still flying on Azores Airlines (aka SATA), is no cakewalk. The basic incompetency of SATA to run on time--even on the scheduled date--is still, literally, up in the air.
Tomás Leal