[Pierre]

So basically, they have confirmed that they managed to pick up a signal from the jet for several hours after they lost contact.

They have two corridors, essentially North Western from South Asia to North Western Asia and potentially Eastern Europe. Or, South Western into the Indian Ocean.

I would find it remarkable that this jet could fly over a continental land mass and not get the attention of the military of the countries it flew over. This would be an Unidentified aircraft, if showed up on military radar surely they would investigate?

This would lead me to believe it went South, to where? No idea.