Question about transiting in HND with luggage.
My upcoming flight in September:
- NH, LAX-HND in F booked via VS with miles.
- 4 hour connection
- NH, HND-TSA in J booked via AV with miles.

I know I'm not allowed at this point to retrieve my luggage and check in at HND. But this is not an interline situation. Same metal but different reservation numbers. NH Customer Service on the phone said there's no guarantee that luggage will be forwarded even though it's an NH-NH connection. CS said it will be determined by the LAX ticket counter during check in because there are two separate tickets. I've done this before TSA-HND-LAX pre-pandemic and had no issues. Has anyone encountered this?

FYI, my return flight is TPE-NRT (BR in J), NRT-LAX (NH in F). BR said there's no problem checking luggage through because both flights are part of Star Alliance.

Am I missing anything here on the outbound flight? Or is it that they technically can't say it can happen but it can be done?