>>317239138
If you use the brand Oculus link cable (I have not used other ones, so I can only comment on this) you get some charge. The cable is fiber optic, but it also runs a copper line along it for recharging.
 It does use more power than the cable can replace, so it is not indefinite. I find that it runs you 5-6 hours as opposed to the 2 hour limit without. I'm planning on timing it tonight from start to finish, so I can give more accurate times later on.
 There is also the elite battery strap (haven't tried it, no idea if they are still selling them through since the headbands broke upon release (aka Snapgate) for some users). There may also be third-party options like battery packs available. But standard Quest 2 battery life does feel insufficient for VR chat.