Gonna have to say nay on all three counts.
There is no continuous feed of data from the aircraft. The most you'll usually have is periodic reports: after takeoff, top-of-climb, winds aloft, etc., are brief snapshots of data. For example, the after takeoff report may have single values of time, aircraft, Lat/Long, ambient temperature, peak EGTs, bleed valve states, fuel flow, etc. It plain, formatted text that gets relayed to a ground service computer (usually either at the airline, or by a service provider like ARINC).
Generally, Boeing or other OEMs do not get access to the information unless the operator has agreed to share the data (which is common in a power-by-the-hour deal, less-so with the airframer, unless the operator has made a specific request for support).
Interestingly, on the 787 and other more "integrated" aircraft (fewer dedicated LRUs) the manufacturers' lawyers have gotten out ahead and have started to make claims of ownership over the information produced by the aircraft, restricting even the airline's access to information about their own flights. It's a similar situation as when Toyota was generally refusing to perform event data recorder readouts when they had their runaway accelerator pedal problem.
