Very strange.
Miller's escape report is very clear : mission was on 4 March, to Bordeaux.
Then, he describes in detail his way out of France and how he arrives in Spain on 10 March.
But we cannot exclude that he made a mistake on the date ?
Mark Shipman's report mentions 5 Feb. and 5 Mar.
In the light of what you found, I personally would be inclined to say that the true date of the crash of Miller was 5 March.
BTW, 5 March is the same day that Chuck Yeager was shot down by FW190 in the same area
https://aerocherche.fr/index.php/art...ces-d-un-mythe
If you want I can email you both reports.
Have a nice day
GC