If I have a 401k rollover contribution that was sent directly to a roth ira and part to traditional ira= $0 taxable income correct?

No.  The part of your 401(k) that was rolled over to a Roth IRA is taxable.  If this occurred in 2020, you should have received a Form 1099-R for each rollover.

If they only sent one 1099-R form you will need to split it into 2 entries  one for each rollover as the program doesn't handle mixed rolls well. 

The answer to the original question is, "it depends."  If the amount rolled over to the Roth IRA was no more than the amount shown in box 5 of the Form 1099-R, no part of these distributions from the traditional account in the 401(k) is taxable.  Otherwise, any amount rolled over to the Roth IRA in excess of the amount in box 5 is taxable.