But that's with a 500% increase in time spent eating. It seems much more efficient to wolf down food after working out, assuming all we're talking about is net calories.
That's assuming that 1) choking plus walking is less fun than eating a meal over a long period, and 2) that it takes just as long. I would dispute #2; you're correct about #1, but there's no reason to expect that you can have weight loss independent of other factors, some of which you might not like.