When I send a dm via noStrudel, I cannot see it in Primal... #nostrudel #primal

When I send a dm via noStrudel, I cannot see it in Primal... #nostrudel #primal

I donโt have much experience with noStrudel, but I wonder if they handle DMs differently?
I think there are competing DM NIPs (none of which have great privacy), they may handle DMs completely outside of Nostr, or use dedicated relays for DMs, etc.
DMs are still a bit of a mess, afaik.