It's interchangeable language.
Absolutely not. DMs prefer multi-device synchronization over forward secrecy. Chats prefer forward secrecy over multi-device synchronization.
So I should not tell people to DM me on Signal? I've been saying that for nearly a decade. My bad.
You're conflating the two & ignoring the nuance nostr:nprofile1qqsth7fr42fyvpjl3rzqclvm7cwves8l8l8lqedgevhlfnamvgyg78spz3mhxue69uhhyetvv9ujuerpd46hxtnfduq3qamnwvaz7tmwdaehgu3wwa5kuegpz4mhxue69uhk2er9dchxummnw3ezumrpdejqj9swg4 just explained. There's a difference in architecture between twitter & telephony. But if folks understand you when you tell them to "DM my cell" I guess it's a non-issue for you.
As I understood from @keychat's evidence.. You need to tell users to Chat with you on Signal but not DM you for Privacy communications.. I guess it is a great starting point to schedule and improving our privacy on private chats..
I'm not sure from the user point of view there's any difference, though.
Facts.