The press conference speaker today was quick to dismiss the jet fuel slick as not from MH370, but he did say it was jet fuel. Do the different suppliers (BP, Shell, Total, ...) have different chemical signatures then? Presume they know what MH370 took on board so have eliminated what they found in the slick.
Which could be explained by a mid-air collision, most likely with a drone of some sort. The impact led to damage of the 777, most likely took out various antennas, perhaps debris damaged the cockpit, but the initial impact did not bring the plane down. It continued to fly for some time and eventually fell into the ocean.
How otherwise do you explain a patch of jet fuel on the ocean, which by coincidence is near the LKP of the malaysian flight? Are these jet fuel patches common on the ocean in that part of the world?