I recently rolled over two 401(k)s into an IRA.
The first was with Empower. It took a total of 11 phones calls, multiple people telling me things that were untrue, and nearly two weeks to get the money sent to VG.
Another provider (Tri-Ad 401k) reached out to let me know that my ER's plan was moving to Empower on x date. I immediately jumped into action to get it rolled before it landed with Empower, and found that it took less than five minutes through their online form.
Empower was fine other than trying to leave them, and, in fairness to them, it may have been exacerbated by the fact that I had a SDBA within my 401(k), which likely complicated things a bit.