A very interesting paper from Nature analyzing the data on worker collaboration through lockdown and the impacts of remote working. The conclusions are what you’d expect. But the data analysis gives some evidence in support that is worth a look.
https://www.nature.com/articles/s41562-021-01196-4
Our results show that firm-wide remote work caused the collaboration network of workers to become more static and siloed, with fewer bridges between disparate parts. Furthermore, there was a decrease in synchronous communication and an increase in asynchronous communication. Together, these effects may make it harder for employees to acquire and share new information across the network.