Well if you have a mastodon account, which works far more like a twitter feed, you can also subscribe to a lemmy community on any instance and you'll get all posts and comments from that sub as a mastodon post in your timeline. it's a bit not very useful i'd say in its current implementation but hey, pretty cool.
you can also post to any kbin community and interact with the comments but that's far closer to the reddit model so a bit less alien.