British Airways set new speed record for transatlantic flights

The transcript discusses the record-breaking subsonic flight of British Airways flight BA112 across the Atlantic, aided by Storm Sierra. The flight maintained a speed of Mach 0.86 and reached a top speed of nearly 825 mph, arriving at Heathrow nearly two hours early. The jet stream significantly boosted the plane's speed and reduced fuel consumption. The flight was faster than a Virgin Airways A350, which also benefited from the jet stream.

What advantage did the jet stream provide to eastbound flights like BA112?

At what time did the plane arrive at Heathrow Airport?