Elias drives. Jon can drive, but only does if Elias’ been drinking (usually after being out with Peter). Elias really hates Jon’s driving.
Jon’s a good cook. The first time he cooked him a meal, Elias was surprised; Jon explained that cooking for one just wasn’t worth it.
Elias learned early on in living together that Jon thrived on routine but never actually makes one. So, Elias made one for him and Jon’s only half aware of it. (Jon just started doing things on certain days like laundry on fridays and Elias is happy it’s working)
They have movie nights. Elias usually picks older movies while Jon goes for contemporary horror to complain about through the entire film.
Jon learned how to do more labor intensive things (fix a flat, mow the lawn, drywall) so Elias would stop calling Peter.