There is also a very rare dyad of both deities1. Khonsu was the son of Mut and Amun forming the Theban triad
Copper alloy H 7.6 Late Period. The goddess wears the double crown of Mut with an uraeus. The falcon-headed figure with a headdress with an uraeus and full disc and moon crescent is Khonsu unconventionally holding the crook and flail of Osiris. Art market
Reference
1None, Unpublished amulet, erroneously described as a dyad of Isis and Khonsu