I’d think that with all the thousands of ‘eyes in the sky’, one of them would have locked onto 370 and followed it. I still believe there’s a record of it, somewhere.
Why would they bother to follow a normal boring passenger jet on a normal boring commercial route? There’s hundreds of them in the air around the world at any minute, if our spy satellites were following them around we wouldn’t have any left to look at important things like Russian missile silos and troop movements. You might believe it, but the facts and logic say there isn’t a record, anywhere. It doesn’t track.