but if you thought that you could just store a separate copy of your seed phrase ON PAPER in a bank deposit box or someplace else.
This is a completely bad decision to store the seed phrase (entirely) in a safe deposit box. The bank (their employees) are people who are strangers to you, but at the same time have access to your safe deposit box. If you store the seed phrase in a safe deposit box, then divide it into parts and in different banks.
The bank doesn't have access to your safe deposit box.
They can access it only with an order from the judiciary power (an executive order by a judge).
They have materially no access to it (they need a blacksmith to open it, as they don't have your key).
This is the point of a safe deposit box.
Hopefully, you can prepare in advance for such an order.