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I have an 2016 with 116,000 miles on it. Changed my oil on Sunday with 6 months and 7,500 since the last change. I had poured in 13 quarts 6 months ago but only drained out 11 quarts from the pan and the filter. Would that normal consumption of oil?
Some oil would still be in the oil filter, no matter how well you drained the filter. I would keep an eye on it by checking the dipstick over the next few trips to fill up with diesel.
2 quarts "used" is considered normal consumption. I would not worry. I would worry about "making oil". "Making oil" is fuel washing by the rings from idling or wear or other causes.
My 2009 6.4 used to "make" almost 2 quarts of oil between 5,000 miles oil changes. I was always amazed that the amount of fuel dilution didn't result in wiped bearings. The amount of oil "production" never varied over the 110,000 miles I had the truck.