Switching tenses within a sentence

I will know if you have eaten my sandwiches.

Ordinarily I skip the OP if I see a resp by Cen, who really knows his [her?] busi. However, it's Thu when BH lets me do this all day

Dale, did you eat my sandwiches?

Cen it's pertinent, striking, surely, that you should so q: I'm not sure whether you had had anything to do with it, but I did just finish the second of two my BH had provided yesterday, and they were both delicious! If indeed you have had some secret hand in their prep or planning, I thank you most boisterously !!!