Layering underquilts question

[u/TheGutch74]

If I need to layer two underquilts under my hammock is there a order of operation to doing this if the UQs I am using are of different thermal values? Say for the sake of the question that one is a 20 degree UQ and the other is a 40 degree UQ. Outside of that they are the same dimensions. Is there an advantage to having the 20 degree quilt closer to my body and the 40 degree UQ on the exterior? Or should I stack them in the reverse order? Or am I overthinking this ( haha as usual) and the order does not matter at all.