Can you do N-1 development with C-41 chemistry?

Can you do N-1 development with C-41 chemistry? I am using the JOBO CPP-2 processor with the 3010 drum to process my 4x5 color negatives.

Recently, I forgot to preheat my drum before processing negatives for a portrait. This lowered my processing temperature. When I examined the negatives I found the following:

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1. There was no color shifts.

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2. The density of the shadow areas were not effected.

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3. The density of the highlight areas were significantly reduced.

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4. I was still able to make acceptable prints from the negatives

although they were flat do to the lack of contrast.

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All of this seems to imply that contracted devlopment can be done with C-41 processing. Most publications and experts say no. I have read in a few places that say yes - by altering the development times. In my case the temperatures were changed.