Mother Daughter ADU to Duplex 1031 house hack exchange

[Duane Ward]

Was listening to On the Market episode 64 and Amanda Han stated that 1031 exchanges could work on house hacks. Anybody know if this could apply to a mother daughter Adu to a duplex? The Adu was rented by family so that did make it a legal Adu. By theory, that should qualify it for the 1031 in regards to it being an investment property right? It fits the other 2 criteria I'm aware of. Lived in the property for 2 of the 5 years and it was a double closing exchange of properties. 

By your understanding, would this qualify for a 1031 exchange? We already know we qualify for the capital gains exclusion per our CPA.