Wondering if the name was held as your dad AND mom, or your dad OR mom.
Seems like if either of them wanted to get into the box they could not unless both were present?
And how did they know your dad had passed?
My mom made the mistake of saying something to them, not knowing. This was probably 30 years ago and I don’t know if it was “and” or “or”.
They told her that she should not have done that because once they knew, they had to freeze the box.
Did you read the book One Second After?
In the book, they were discussing that since banks had electronic security, people had valuables in safe deposit boxes they could no longer access because the electric grid was down.
Something to keep in mind.