I have a booking on TAP and as of now it looks that although my original flight to LIS is cancelled, there is a viable option of getting to LIS via FRA (LH metal, both flights codeshared by TP though). Anyone has an experience if TP is willing to rebook pax on non-TP metal or do they push you to stick to TP metal? And is an eventual fare-class difference an issue or do they rebook as long as there are free places available for sale?