I recently bought with a KLM ticket office an AF premium economy ticket on DL stock - I knew I am asking for trouble, but the ticket agent told me to reserve my seats on AF's site. As I was logged in on KL"s website I tried there first - three bulkhead seats available in PE. On DL's website - all blocked and on AF's website seven seats in second and third row empty (no bullhead seats available)…. I chose one in the 2nd row as I do not like PE bulkhead seats