Flying Blue (Air France, KLM, and Other Partners) - CDG-AMS-TXL considerations

If there's availability when some bonus miles post, I hope later this month, I'm planning to use a NW/DL award from the U.S. to Paris and Berlin. For the CDG-TXL segment, there usually isn't availability in the award bucket for the AF non-stops; when there is, it's at 7 a.m., and I'm thinking a connection at a more decent hour would be preferable. There are lots of possible connections through AMS; I can judge which times look best, but I'd like to know about these considerations:

With them being the same company, does it matter much if the CDG-AMS segment is operated by AF or KL? Service on the short flight, convenience at the check-in or connection?

Is there a connecting time at AMS that's legal but too short for comfort?

Other than that this would, in my opinion, if booked as a separate award ticket be a waste of miles and that such a routing might be more expensive if through AMS due to the various surcharges than a direct one:

All AF/KL flights between CDG and AMS are codeshared. Service is minimal in Y on these short flights. C has slightly more but the actual flights are less than an hour..

Check in is straight-forward. OLCI is preferred by most as it opens 30 hrs in advance so waiting for CI at CDG will most likely give you middle seats.

You should be ok with a connection of around 60 minutes in AMS, given that both flights are within the Schengen zone and therefore don't involve security check or passport control. The TXL flight may be a bus gate though. AF's CDG-AMS flights will arrive at the C pier. Flights to TXL depart C or B gates so the transfer would normally be very convenient.

Given the chance of ATC delays on teh CDG-AMS route, I would personally try for a 90 minute connection if you have a choice.

A 40 minute connection at AMS is 'legal' but I would only accept it if this connection is on one itinerary and if the connecting flight to TXL is not the day's last one. If it is booked as two separate itineraries, KL may not wish to accomodate you should you miss your connecting flight.

And if you don't find availability: Easyjet fly direct from ORY to SXF.

Thanks. As part of the transantlantic award, the 3-legged trip including this one prices at the same miles as a basic TATL round trip. That is, it did; looking this morning, availability at the Saver level for these dates (early September) is disappearing. If, when the miles post, I can get the open-jaw trip but can't get this bridge segment, I suppose I shouldn't wait and will need to resign myself to taking EasyJet.