"I've been told by a Fidelity rep, and a sibling was told by a Schwab rep, that we have no RMDs on an inherited Roth, but only the requirement to withdraw everything by the end of 2034."
This is correct. There are no annual RMDs from an inherited IRA that is subject to the 10-year rule because with respect to a Roth IRA, the decedent is deemed to have died before their Required Beginning Date for RMDs (because the participant in a Roth IRA is not subject to RMDs).
