Traditional IRA backdoor workaround

If someone has a very large Traditional IRA (coming from a old 401(k) rolled over - wish I had found you before I did that), which makes ‘chunking’ a non-starter, what are alternate options? Can one roll the Traditional IRA to a Solo 401(k), hence making Traditional IRA balance $0, allowing for a Traditional IRA to Roth IRA backdoor rollover with no tax inmpact?

Answered this question on the show today, 12/11/24. Thank you!! Mark and Mat