I’m a bit of an exception because I’m in a city that only has a couple hundred employees, but when I do return to the office, it won’t be to collaborate with teammates: I will be joining zoom calls with people in other cities (which was my day-to-day pre-pandemic). Pre pandemic I would travel every 2-weeks to company HQ to be in-person for demo with stakeholders and sprint planning, but even then many people would join via zoom anyway.
I don’t think return for office has anything to do with productivity and more about anxiety around investments in commercial real estate.