[JanZ]

Interesting discussion!
Fw Bauer was lost in the Nordhausen area, on border of Planquardats KB and LB, due to his injury stayed in hospital till January 1945.
In that area is reported a huge combat by the 352nd FG which attacked some 20-30+ s/e e/a in area Nordhausen-Mulhousen-Gottingen from 11:55 to 12:15, claiming 7 kills. Combat was from 27000 ft to the deck.

But the reported area covers "only" 5 LW losses, from JG 76, JGr.10 and JG 300 (including Bauer)
So the mentioned combat was possibly slightly ,ore on SW from the reported area, between Kassel and Erfurt. There are several losses from JG 300, JG 76 and JG 27. US fighter losses in that area are mostly around 12:00 (352, 359 and 364 FGs). Interesting is, these were FGs originally escorting different Bomb Divisions, but were in the area on time to protect 1st BD bomber stream heading for Merseburg and Halle. So the combat of these three US fighter groups with part of JG 300 and JG 76 and JGr 10 did not allows Luftwaffe defenders to make a large formation to jump on bombers... so finally only the Stab of JG 300 with Walter Dahl (and IV./JG 3) successfully attacked the 92nd BG (1st BD) over target.
(only 368FS/352FG spotted part of the composite "sturmattack" preparing to hit bombers over Merseburg and went into combat with claims 6-2-1).
It was reported at 12:02 - 12:08.

So, that is the situation in area... back to the original question:

- first two victories (by Bauer) were claimed in area SE of Kassel at 11:52, 11:53. That should be correct, since it is area and time of the above described large combat.
Five P-51s were lost in that area and time (shortly before midday), but LW claimed much more, of course. So there is hard to say who may be Bauer's victim, as there were lost (being shot down by fighters) 364FG - Albrecht, Davis; 352FG - Rayborn; 359FG – Breuning, O'Shea.

- Konrad Bauer's third P-51 on that day is reported in planquadrat NT "Schwarmstädt-Arsfeld" at 11:58... but this is far away from first combat and his later crashsite and also from combat/loses/victories of other JG 300 planes (mean the Sturmgruppe, Stab, also as their Bf 109 escort). It is close to the battle over Giessen (2nd BD + their escort vs. JG 53), but I do not believe, that the reported victory has a relation to that separate battle. At least there is no P-51 crash, except to Lt. Frank Holliday from 359th FG just south of that area.
(see very interesting description by “Skyraider3D” in his post 19th November 2013, 12:34 and note about Gerhard Piel of 5./JG 300 !)

I do not know details and exact time about Bauer's loss on that day, but it seems, that he flew from the battle area by NE direction (his base was SE direction) and either due to plane damage, injury, or subsequent combat he bailed out.