The main meal being the evening meal is largely an artefact of the Industrial Revolution, when large parts of the population spent most of the day at a workplace away from home. In agrarian societies, the main meal, i.e. dinner, being in the middle of the day was more common, and the smaller evening meal was referred to as supper.
That will depend on there being railway stations in Germany with spare platforms that can be walled off and space for UK immigration/customs facilities. If I recall correctly, the ones close enough to be within a competitively short journey from the UK (Cologne, Frankfurt and such) don’t have this kind of space, and the nearest ones that could be used are inconveniently far away.
The other option is to march everyone off the train at Calais and do immigration there, but that would add an extra hour or two to the journey, along with considerable annoyance.
Someone needs to tell Carole Cadwallader to move her resistance headquarters out of the Nazi bar. There are a lot of people who’d subscribe to her journalism if it didn’t also involve funding the enemy.
There was a comedian who had a routine that went something like “my sister’s husband is German. Whenever he visits the US, he says that you just can’t get good bagels in Germany. I said, “and whose fault is that?” “
To be fair, until you can see both sides of each horse, that technically doesn’t disprove it