Foundation seperation

I am curious on thoughts on where I went wrong to get this result with my make-up .

Prepped my skin and gave it 20 minutes between each skincare step. Vit C, Ultraceuticals moisturiser and Mecca sun screen.

My makeup routine below

Bobbi Brown face base NARS radiant longwear CT setting spray Mecca bronzer and highlighter Laura Mercier translucent setting powder Then another layer of CT setting spray

I needed it to last all day as I had 2 events to attend. After 2 hours it had already separated.

I've also tried Hourglass veil primer and it didn't separate as much but still got that result.

I have a dry chin and t-zone with an oily nose. So combo skin. just want to find my holy grail so my makeup looks flawless all day 😭😭