According to Robyn Dixon of the Washington Post on 6/18/21 regarding the outcome of the Buden-Putin summit in Geneva, I shall simply quote directly from what looks to be the bottom line from Putin himself:
Despite a packed European tour schedule, Biden "looked fresh" and was "fully aware of the materials" during the two hours of talks, Putin said:
'Biden is a professional. One should be very observant when working with him in order not to miss anything. He misses nothing. I can assure you," he added.