[ Magnus remains silent while watching the proverbial penny drop that's occurring right in front of his face. He then nods very slowly. ]

Yes.

[ He will put Axel out of his misery momentarily, but will also just wait for an appropriate interval. Maybe one where it doesn't look like he's actively wishing for the ground to swallow him whole. ] Alec Lightwood-Bane. [ He points to himself. ] I'm the "Bane" half of that hyphenation. Alexander is the "Lightwood."

[ His features then relax. ] You had no way of knowing, Axel. I don't think there's any harm done.