Hello,
The attached articles don’t list B12 as depleting any particular minerals, although there can be some drug interactions. In short, it doesn’t appear that high amounts of b12 would require extra B6.
https://lpi.oregonstate.edu/mic/vitamins/vitamin-B12#safety
https://ods.od.nih.gov/factsheets/VitaminB12-HealthProfessional/#h8