I enjoyed the harmonies greatly.
I bopper along to different clave strikes. Felt the most intuitive with guaguancó clave most of time rather than Son (arguably actually Yambu) clave. Not sure if it is because I consume timba vs salsa when not dancing.
I don't hear semi clave, or maybe I don't understand. A few times it has a 4 bar riff and reset, if that's what you mean.
But I have a feeling that Hou have a much greater salsa music understanding than I.