Lawless has said both Walters and O'shea will be back... He didn't say anything about anybody else tho, including Hall.
Who is to say Miller hasn't talk to Benevides to replace Hall, Maybe Noel Thorpe in Montreal, Lots of names out there actually
As for the OC position, Khari,Lapo, Dyce, Jarious Jackson, Marcus Brady... who really knows...
I don't see the issue in any of this really, I don't believe Miller would do this without both Walters and O'shea signing off on it... and that was my big concern at first... After some thought and seeing as how they all seem to be on the same page so far, It wouldn't surprise me if Walters and O'shea both gave Miller a list of names they are interested in and asked him to reach out and gauge their interest, nothing wrong with that.
If he talked to a guy on another team, big deal, cuz obviously he got permission to talk to him, if not, oh well, teams do it all the time.