The relevance is that at LHR (which I accept this isn't) the cabin crew are frequently on a Dranse day and hence are not too concerned about eating on board the aircraft. They sometimes fail to appreciate that the flight crew are not on a Dranse day but will be doing a minimum time turnaround with an aircraft change on to a long sector with no meal loaded, hence if they don't eat on that first sector they don't eat for hours. Sometimes you've got to prod the slow ones if you want to eat or else your food will be slung in (and straight back out again) at FL100 on the approach. Thats if you're don't get the "It's cooking......it's in the oven.......it'll be 5 minutes.....we're just busy right now.........Oh sorry, we forgot to cook it" scenario! (Yes it has happened on more than one occasion)
Slinging the flight crew grub in isn't a difficult task judging by the way competent crews can manage to achieve it without batting an eyelid. Unfortunately for a minority of our crew it can all be too much of a challenge, and they are usually the same ones who seem unable to complete the lavatory checks or myriad other essential tasks as they're 'too busy' (for safety?). Strangely enough these ones always have enough time to leg it off the aircraft to the duty free shop.