They all talk to each other.

From my mastodon account i can:

• follow sublemmys
• follow lemmy users
• comment on lemmy posts
• comment on lemmy comments
• share lemmy posts
• share lemmy comments

From my lemmy account i can:

• follow mastodon users
• comment on mastodon users posts
• comment on mastodon users comments
• crosspost mastodon users posts to sublemmys

Really the fediverse is a “choose your own interface” kinda place. Do you understand reddit UI best? Use lemmy. Does twitter UI make sense to you? Use mastodon. Do you like both? Use both for different reasons. Either way you can interact with anyone, using anything, anywhere that uses activitypub and anyone, from anywhere, using anything suppirting activitypub can interact with you. That is the whole point. Get rid of the silo social media so you never have to lose your social graph again because you moved to a new service they are not on

Headsets, no. They weigh to much and every damn gram counts. Glasses, sure