The ornamental design for an interconnecting panelelement, as shown and described.
FIG. 1 is a top-front perspective view of the interconnecting panel element shown in a position of use with additional, environmental panel elements.
FIG. 2 is a top-front perspective view thereof;
FIG. 3 is a top view thereof;
FIG. 4 is a bottom view thereof;
FIG. 5 is a right-side elevation view thereof, shown in a position of use with an additional environmental panel element, the left-side being a mirror image;
FIG. 6 is a top-right perspective view thereof, shown in a position of use with an additional environmental panel element; and,
FIG. 7 is a right perspective view thereof, shown in a position of use with an additional environmental panel element.
Any broken line illustration of environmental structure in the drawing is not part of the design sought to be patented. Portions of the article not shown, if any, form no part of the claimed design.