Go to whichever comment/post on a lemmy instance you’re trying to comment on and copy the link in that little colorful icon below/above the comment/post (that’s the fediverse icon and the fediverse-wide interoperable link).
Then just paste that into your search field on your mastodon instance, and the rest is self-explanatory from there.
Wait, what is this feature? Are they linked somehow?
Go to whichever comment/post on a lemmy instance you’re trying to comment on and copy the link in that little colorful icon below/above the comment/post (that’s the fediverse icon and the fediverse-wide interoperable link).
Then just paste that into your search field on your mastodon instance, and the rest is self-explanatory from there.