Insertion of silylene: SiCl2 into the Si−Si bond of a phosphinoamidinate-supported disilylene affords a SiCl2-bridged bis(silylene) that, upon heating, rearranges into a silyl-substituted disilylene. Analogous insertion of GeCl2 leads directly to a silyl-substituted silylene-germylene derivative. More information can be found in the Research Article by S. F. Vyboishchikov, G. I. Nikonov and co-workers (DOI: 10.1002/chem.202202799).