Yes, however, it is not legal in the Mil-Std-1553 standard to do so. Bus A is the redundant bus for Bus B, and vice-versa, so it does not make a lot of sense in real world applications.
We have created a sample program using the Alta API to do this, found here: ADT_L1_1553_ex_BIT_BusAB_Wrap (591 downloads )