Certainly, safe deposit boxes are the number one target of robbers, along with your electronic devices, thus, in case of a robbery, you're practically losing access both to your computer and your backup phrase.
The safest bet is as I mentioned, a drawer or a compartment in a bedside stand, clothe closet, something that doesn't stand out, along with multiple copies.
I think that it is easier to steal stuff from my home than from banks vault. And the same thing goes with fire destroying the building.
Oh excuse me, I didn't notice we were talking about bank deposit boxes, I dun goofed. I thought we were discussing having a safe box at tome, in which case, my previous reply could possibly be a possibility. Bank deposit boxes are deemed safe, only specific people have access to their storage, while even the bank doesn't know its contents.
On the other hand, I'd still use a hardware wallet, since you're paying the bank a yearly fee anyway, why not spend some money on investing on a safe, hardware device.
The idea is to use hardware wallet to create 24 word pass code with additional 25th word password but then secure those codes inside of safety deposit box in bank. The hardware wallet itself does not have any value to anyone after the wallet has been created, right? Because it does not hold the passwords.