This might sound like an odd question, but every time this type of sandwich comes up in conversation, the name is usually shortened to "sub". The only exception to this was two specific occasions, both where I was talking to someone from England. Each of them referred to it as a "Subway", as in, the restaurant chain… or maybe the underground transit system, idk. I looked this up though and couldn't find anything that said you call them "Subways", so I'm just curious if anyone has had a conversation about this, and what they were referred to as.