Hmmm if it's feeling dry just add some condish. I do know that coconut oil is supposed to help with protein retention, so I don't know if maybe the amount of protein functioned like a hard PT.... it is true that despite it being a PT/DT you did leave it on overnight, so the protein even if it wasn't a lot really had time to absorb. Anyway if it's feeling dry just add some condish as an LI.
EDIT: I'm looking at your siggy. I wouldn't use the SM milk for the above purpose because it has some protein and it's full of anti-humectants which is not exactly what dry hair needs. I see you have CJ Rehab... use some of that... dilute it with water if necessary.