Quick question regarding act rank triangle for Immortal+. I've only been playing for a couple months, and have just now gotten to Immortal (and subsequently been getting a lot of last act immortals in my games), but some of how the act rank...

I was playing unrated with a friend and we met some really cool teammates but someone dodged and now i only have their usernames and a clip of the pregame lobby. i really want to find them though because they were really chill teammates. Ca...