I’d forgotten that Combeferre just PEACES OUT OF THE ROOM immediately after murdering Marius in cold blood with “to be free” and deals his musical final blow FROM THE STAIRS.
(I had not forgotten that Enjolras tag teams with “Citizen, my mother is the Republic,” but it will NEVER NOT BE HILARIOUS and I will use any excuse to mention it again.)
The fact that everybody else leaves too, leaving Enjolras alone with Marius as Combeferre-whisperer, only strengthens my assumption that they have an official protocol for Combeferre comebacks.