Doesn't sound like it. Seems like MOS just thought he'd be a good fit.
Miller didn’t put much thought into coaching until he was offered the job last week. He got a taste of what it might be like last season, as he spent the whole year around the team, working with players in the meeting room, but his focus was solely on getting back on the field.
“I didn’t expect to be offered this role, at all. It was very shocking when it did come about. He definitely put me at ease saying you know the game, you know where to put guys, you know what they need to do and you see it on film when there’s an issue and you know where we went wrong.”
https://www.winnipegfreepress.com/sports/2024/01/08/miller-realizes-retirement-required-in-new-role-as-blue-bombers-special-teams-co-ordinator