Retirement tax questions

They're one and the same in this instance, Fidelity held the 403(B) and also the rollover IRA.  They erroneously allowed the rollover without the RMD being taken from the 403(B).  There is another 403(B) NOT rolled over yet with TIAA-CREF and from the same employer (they changed from Fidelity to TIAA-CREF) which I was hoping to take the aggregate RMD from.