The part about Ben being a two-time YC alum caught my eye. In practice, what does that mean? I was under the impression that even once YC technically ends, fou

The part about Ben being a two-time YC alum caught my eye. In practice, what does that mean? I was under the impression that even once YC technically ends, founders are still allowed to schedule office hours if it suites them. If so, what does that person receive from returning to YC? I presume (1) the opportunity to have the advice geared towards a new company, not the old one (2) access to the dinners for that session, and (3) the ability to bring in new partners to YC. Roughly accurate?