Retirement tax questions

again, no.

1)  Each 401k account's RMD must be withdrawn individually form each 401k they have (some people do have more than one 401k <or TSP>)

2)  BUT IRAs are handled differently....you total all your IRAs together (and only the IRAs) and then you can withdraw the RMD from one IRA.

But an IRA is Not a 401k
.......and their RMDs must be dealt with separately.  so the excess from the 401k cannot be used to satisfy the IRA RMD.
____________*Answers are correct to the best of my knowledge when posted, but should not be considered to be legal or official tax advice.*