Originally Posted by
mikelat
Per rules of the programs, you only get the benefits if you credit the flights to that program. Getting US benefits while crediting to Air Berlin is not possible in the simplest method.
Can you show us where in US's Terms and Conditions this is not allowed?
Air Berlin's
T&Cs do not prohibit the use of topbonus status privileges when earning on any other partner FFP. In fact, I have never heard of any FFP expressly requiring that miles are earned in that programme for all flights for which its status privileges are used.