How exactly one goes about networking in conferences? [D]

So ICLR is coming and apparently the biggest value one can get from these conferences is to network.

Let's take my example: I'm a PhD student looking for industry internships. Say I have located about 15-20 posters regarding topics adjacent or directly related to my area of research, some of which are by authors from industry labs.

I go to the poster, ask the authors about their paper, discuss a bit, perhaps ask some insightful questions and mention that I work in similar things, and then after the conference I email them asking if they have internships? Is this how I should be extracting the networking value of it?

Also, how overwhelmed are authors with these kind of requests? Seems like cold emailing vs this doesn't make that much of a difference, besides the fact that they might remember me from the conversation we had during 15 minutes during their poster session.