The ornamental design for a combined hot airgun and hot air apparatus, as shown and described.
FIG. 1 is a front perspective view of a combined hot air gun and hot air apparatus showing a hot air gun, a hot air apparatus being omitted for ease of illustration;
FIG. 2 is an enlarged left side perspective view thereof, a handle and hot air apparatus being omitted for ease of illustration;
FIG. 3 is a front perspective view of a hot air apparatus with hot air gun being in an alternate position of that shown in FIG. 1; and,
FIG. 4 is a top view of a hot air apparatus, a hot air gun being omitted for ease of illustration.