I am flying to Tanzania in July on the following itinerary:
IAD-AMS-NBO-DAR-NBO-AMS-IAD. The IAD-AMS-NBO and NBO-AMS-IAD are Delta codeshares operated by KLM. I am Silver medallion on Delta.

I am able to pull up my reservation on both klm.com and delta.com. I initially selected my seats on delta.com. Now the seats do not appear on the reservation when viewed at klm.com. Comparing the seat maps, it looks like Delta has blocked out the aisle seats in the front half of the coach cabin, for the first two flights. I decided then to select seats on klm.com because I can sit much further forward on the aisle, when selecting my seats there. I now have different seat assignments for each flight. Which ones will actually be granted to me on my boarding pass?