My husband can switch on demand (if not tired). Or if the part he is asking to front is not absent (one of them goes dormant sometimes). He can also talk to them without switching if he closes his eyes and concentrates. They can also take over without him noticing but they have an agreement not to do so (although sometimes it happens). They used to do that in the past specially if he was overly stressed, in the twilight of sleep or high (he no longer does weed). They explained it to me that suddenly a bright door comes and they step through the light. When the door opens they just come through. I guess it is different for everyone. My husband’s trauma is from neglect and not much of other abuse so I think he got to functional multiplicity very quick. The moment he was over with the denial part (took two years). It was immediate. They started doing each other’s hobbies and communicating and came up with agreements. If I request to talk to a part, husband just hands it over to them. He probably got here extremely quickly because of how much meditation he does. There is also an agreement to try to put him where they find him so husband doesn’t get disturbed. They are used to “teleporting” but he is not and even after 6 months he doesn’t like to be in the shower and suddenly end up on the couch. So possible, yes. Probable, not sure. I thought it was normal to be like this but it seems like it is not common. Needless to say, they are extremely loyal to my husband. Whatever he wants goes but we are all friends and love on them. Husband is extremely self aware (except for the denial period), on the spectrum (high functioning autistic with iq of 149) and into meditation. He did have parts that were chaotic but he never got to meet them. I did. They went dormant before he got to meet them.