It's a way to just be together, It's kinda just a way to share space and breakup the loneliness of covid and you can just ask questions to the team.
I've not done it as an established thing, but had standups where we pivoted to working on issues and as the issue got sorted everyone just chatted and enjoyed each other's company whilst moving onto other work. 3 hours later it's lunch and you end a mega video chat.