There’s always been an assumption that coordinators have been hired, but Mario has just been waiting to announce them...
If that’s the case, it will have to be two people who either are currently preparing for the National championship game or currently on a NFL team & preparing for the end of the season or possibly preparing the playoffs.
Because if it’s any coordinators from teams whose season has already been over, then they had no reason to wait so long to announce the hires, which would lead me to believe they didn’t have a deal in place to begin with...
Which is why I don’t think either coordinator has actually been hired yet, at the very least there may be deals with agreements in principle, but I doubt anyone has actually signed yet, but that’s just my guess.