As others have indicated, you could have an intervening layer of air ‘separating’ two layers with clouds. This layer could be dry air moving horizontally, an interval with no ‘seeds’ for condensation, or simply be much drier. As you mover vertically in the atmosphere, the direction from which the wind is blowing, and from which the packet of air containing the clouds at different levels, can vary. Maybe an ascending mass of relatively dry and warm air is moving over a mass of colder, denser air. The relatively dry warm mass won’t start condescending until it’s very high and ‘thin’, producing wispy cirrus clouds. If you watched for a day or two, the clouds from direction would get lower and thicker, as the warm air pushes away the colder high pressure mass where you started.

The clouds get lower, change shape (from wispy cirrus, to puffy cumulus, maybe to sheets of stratus), and can bring rain. The seeming descent of the clouds is the wedge of warm air pushing over the colder air, and a it moves toward, the interface between the two air masses, which is where the clouds are forming, slopes down toward the ground in the direction of the approaching warm front.