From Lemmy you can see the accounts, but usually not their content (see note below). @[email protected]
@[email protected]

Interaction between Lemmy and Mastodon doesn't work well because the two services structure their content differently. Lemmy is community based and Mastodon is user based. Lemmy doesn't have a mechanism to follow an individual user, and Mastodon doesn't have an analog to communities (afaik).

(Note: In the case of these two accounts, some of their toots are visible because they have been pulled into the [email protected] community as part of an experiment to bridge Lemmy and Mastodon.)

You can't follow accounts on lemmy, afaik

I wish you could, but for all intents and purposes Lemmy and Mastodon aren't part of the same fediverse. Kbin/Mbin let you follow accounts, and I think [email protected] automatically turns toots from some accounts (including Takei's) into Lemmy posts.

Kbin/mbin should allow it.