I was/am an IC on a medium-sized team. I had a project I was the primary contributor for within that team that I've handed off to my teammates to continue (after writing up documentation and doing some knowledge transfer).

I occasionally log in to read my email to keep up-to-date with happenings among the team, but I haven't needed to respond to anything since I went out.

Our team made an effort in the last year to reduce some of the silo-ization of knowledge and increase our 'lottery factor', and I think those efforts have helped make sure that the team was prepared for one of us going out on leave. At the very least, nobody has called me up saying "hey, your systems are on fire!", so that's been nice.