Our main README.md, which is shown on the LLVM project’s landing page on github has a Getting in Touch section. It points to Discourse, Discord and IRC.
I thought that it would be useful if it would also point to the Office Hours and Online Sync-ups as ways to “get in touch”. Therefore, I created a PR to make that change at [docs] Improve README: point to office hours and online sync-ups by kbeyls · Pull Request #69323 · llvm/llvm-project · GitHub.
In that PR, I also propose to drop the link to IRC as it is not used very much anymore these days by the majority of the community.