Originally Posted by
dimramon
I was yelled at today by a CSR at the 1K counter for illegal back-to-back ticketing.
I have a B-fare booked that looks as follows: beginning of April I flew DEN-AMS, and somewhere in July I will be flying BRU-DEN. I booked it this way for accounting purposes......
Sounds like his/her client paid for the B fare ticket.

B fare is a very high fare. It is in the $3500 range without min/max stay requirement. Nested ticket should pose no problem as he/she is not trying to circumvent restrictions. However, it would have been different if the OP were to upgrade to a Z fare, which is only a few hundreds higher each way, with loads of restrictions.