After watching the video below (found here and here) I am reminded of the series of possibly less than 100% serious questions here about being weightless in the middle of a large volume and considering the options for reaction masses to get to the side and grab hold of something.
In the video I noticed that there is a central cord or rope to hold on to, possibly for this very reason (see Why did Skylab have a thick blue flexible cord running down its central axis?).
Question: Is there some official or unofficial record for the longest time that an anstronaut remained in free fall, not holding on to or being secured by or pushed/nudged/impulsed by anything? This could be suited or in a spacecraft, but no tethers or cords or contact with secured objects.