I think you expect a relative clause with a relative pronoun: "...go to hear other brilliant people who share/are sharing their ideas."
Relative pronouns are often dropped in short restrictive clauses: That's the man [whom] I saw.
We often leave out such pronouns in English, although they are still there invisibly, like you (understood) in (You) please let me know if this is helpful.
Although the Wikipedia section linked to above says that this omission (the grammatical term is ellipsis) is: "generally restricted to very informal speech and certain fixed expressions," I disagree. It occurs even in formal writing.
However, it goes on to say that "the rules for their use [whether to use them or omit them] are complex and vary among dialects," and this, unfortunately, is quite true. That only improves with more and more input of correct English, and of course it is maddeningly slow for most learners!
Update: In his comment under your question, F.E. points to a more basic explanation. Multiple verbs are positioned in an additive fashion, not necessarily as main and relative/subordinate clauses. All such "serial" verbs except the last are catenative verbs, and their basic grammar is described here.