This probably merits a long piece at some point, but recording every meeting has been transformative for us: it's zero time and energy (you just need someone to hit the record button!) and it gives engineers the freedom to not be in a meeting for fear of what will be done in their absence (a surprisingly common motive for attending a meeting!). As for going back through meetings: yes, we definitely do (for a variety of reasons), though the distribution is lumpy (and most meetings are likely never listened to again).