The possibility may exist. If the mold line from the bowl of the goblet is drastically off set from the mold line from the stem/base [a 1/4 turn or more?] maybe. If your lucky you may see some tooling marks on the upper stem. At the least I think the upper stem to bowl area put to the fire more than usual. This was a difficult area to get exposed without reheating the bowl too much. The punty rod being a conductor of heat you risk the piece dropping off the rod if heated too much at the attachment point. The punty rod attached to an extension from the base makes this task much easier. Also, a well at the base of the mold would act as a release point if the amount of glass dropped into the mold was a bit much [overfill]. In the early period of pressing "eyeballing" the right amount took some experience.
Similar article to size and period. A quite small compote [13cm dia.X 10.75cm tall] made in a more conventional manner. Two separate pressed pieces attached with a wafer, which was then tooled [shaped]. an applied and shaped ring on the stem. Rough snapped pontil on base. Lead glass, probably Belgian. Bowl with a noticeable overfill.