That's great, but what was the connecting time between your preferred two TG flights if you don't mind sharing to test the theory?

In my mind, it's not TG I'd say, I booked long connections for TG to TG via LH M&M (under the old non-dynamic chart, now it's too expensive) and no issues. Only with LM trying to book TG do I encounter this so I think this is LMs doing, knowingly or unbeknownst. All around competence isn't their strong suit.