I have no idea how many hours David Davis spent on negotiations, but it occurs to me that quality is more important than quantity. How is it better to be there 2,000,000 hours hearing the same, "No, no, no" one heard throughout the first 4 hours ?
Remember that the EU wasted half the time dissussing not the trade stuff, but how much they could mug us for before we started talks 'proper'. They then spent a lot of time asking us for solutions on how to get over their delaying tactic of saying they wanted an open border in Ireland but ensuring reasonable proposals were rejected and making ridiculous, ones such as a border betwenn NI and the rest of the UK knowing it'd be unacceptable (any EU country happy to be split up, is there ?).
From what we here the EU has never had any intent of making progress, merely informing us (and blaming us !) that they are wasting our time before the deadline.