Are you implying the details ought to be hush hush, pursuit? If so, how very eighties!
On rumours and news it states the detail was a practice intercept and guide (one account said "force") it to land. Typhoon had it's belly tank ripped off, Learjet one engine and possibly a wing. Also brake chute from typhoon fell away leading for a while, to hope of survivor.
Comment from German Air Force Colonel that pilots "had performed remarkable feat in bringing aircraft home". After two fatalities, an odd line to be taking at this point, I suggest. Too early for allocating blame of course, but very much too soon to be handing out medals.