There are two potential options: (1) Roll/convert directly from the 401(k) to the RIRA. (2) Roll to TIRA, then convert to RIRA.
However, it's a difference which makes (virtually) no difference. In both cases, the money can only go to the RIRA if your modified AGI is low enough. In both cases, the money ultimately going into the RIRA will be taxable.
The only thing option (1) gets you is slightly less paperwork.
That's why a plan preventing you from doing (1) is nothing to get worked up about.
-- Rich Carreiro snipped-for-privacy@rlcarr.com