Perhaps the 84 second burn overflowed the integer (2^6) and was caught by a 2^7s check (127s)
Every country uses a combination of older and newer equipment in any war. The war propaganda wizards just try to make things like that look unique to Russia.
I would take what our jingoistic media and talking heads say with a very large pinch of salt. It’s quite disrespectful to Ukrainian soldiers to say they’ve been facing an “antique show of an invasion”, not to mention Russian engineers. Propaganda aside, both sides have fought hard in what has been a very modern war.
I’ve more paid attention to Ukranians’ accounts of events than major media coverage. Lots of pictures of really old tanks being dragged away by farm equipment and other extremely dated supplies being found. If this is anyone’s propaganda it’s Ukraine’s, in which case I’m happy to participate.
Nobody said it hasn’t been hellish for Ukraine, or that it hasn’t been a hard fight. Even if they were equipped with entirely WW2-era supplies, an invasion is an invasion, and by all accounts this has been a particularly cruel and brutal invasion.
I really don’t care at all about being fair to Russian engineers at the moment.