No you are not at all off topic.
My bother died in a car accident when he turned 21 so I cannot compare memories with him anymore. We were 14 months apart, so we were very close. I have a sister who is long gone (no contact at all and I don't have a clue as to where she is) and she is 10 years younger.
I know how hard it is...the only person I can really talk to is my mother and I tip toe around that. Is it something you can do? Tip toe around your brother? Are you close at all? In age?
I do remember one of the last times I saw my bother alive we were fighting about our parents. His version vs. mine.
Hugs,
JT