Indeed, that may be advisable. The first time it happened, I was called to the gate as the bag was in a customs hold and needed to be released after confirming that I was travelling. I assumed that was the reason it ended up not coming along. Not much more one can do there. And frankly, these things work most of the time. Other than early Covid years I do TATL around 6-8 times per year and I can only recall once that I had a bag delayed in transit and that was off a very late inbound. I had to run to my next gate and as soon as I was onboard we were off.

In any case, I’m done with KL flights for the next little while as all my current bookings are AC/LH/SAS via YYZ.

As an update, the bag is still at someone’s house in Slough. See if it moves today!