Yes my understanding is that you can use Mastodon to post to a community (by tagging it) or to respond to a post or comment. You can follow a Lemmy community as if it were a user.
However, to use a Lemmy account to interact with Mastodon, you are limited to replying to Mastodon users who have posted in a Lemmy community or commented on a Lemmy post.
I’m interacting with my Mastodon account using my lemmy instance and vice versa…
I’m getting back to you from my Mastodon instance… Wait !!
Yes my understanding is that you can use Mastodon to post to a community (by tagging it) or to respond to a post or comment. You can follow a Lemmy community as if it were a user.
However, to use a Lemmy account to interact with Mastodon, you are limited to replying to Mastodon users who have posted in a Lemmy community or commented on a Lemmy post.