Pressure should be the same everywhere in a closed system, especially with liquids, because they cannot be compressed more at one point than at another.
Temperature should be only minimally different in both lines to the cooler. However, we now know that the sensor pickup point on the front left of the engine block is a "dead end" and will deviate at the temperature.
In the oil pan I did not want to work anything in, because I can neither cut a thread, nor necessarily at a deep point of the vehicle to attach a shock-sensitive sensor.
Somehow the whole realization of the Diskusssion is difficult for me to interpret. Apparently, the aluminum block with analysis decrease points in the two lines that go to the radiator has been a not so bad idea, in the thead of the other forum.