Guitar case in overhead bin on flight to ZIH?

2/04/2026 Has anyone either themself taken, or has seen a person bring onboard & store in the overhead bin on a flight to ZIH,
a hardshell guitar case for a DM5 Dreadnaught size acoustic guitar?

P.S: I'm NOT looking for specific information.
Simply an "eye-witness" account,
IF someone has seen one of those cases put in the overhead bin, on a flight they were on. Nothing else.
That said, my daughter is bringing mine down on an AA flight.
She was told that IF space is available, & it fits, it can fly in the overhead bin.