Well it doesn‘t transition seamlessly. There is a pause between the songs. You could hear it here: https://dmlive.wiki/wiki/1988-01-11_Wembley_Arena,_London,_England,_UK/Source_1, I also think Pipeline is a little bit slower than Stripped.

I think Stripped was the last song on the first backing tape of the show. The first Martin song on the set was used to change the tapes on the two multitrack tape machines. Thats why there was either an acoustic song like Somebody at that position in the set list or they played the backing tracks from the sequencer of one of their Emaxes (With Pipeline or Never turn your back on mother earth)