Hardline IS part of salesfloor. Salesfloor Hardlines and Salesfloor Softlines.
Also, unless it's an extremely low volume store, sales floor TMs don't "stock" per se. You probably just saw them putting away reshop. Or "go-backs" as I've seen some people on here call it.
The guys who do the pulls from the back...i forget what they're job title is...they generally do the stockings.
Uh that's actually not typical. Backroom shouldn't typically be pushing pulls. That's a part of salesfloor's core roles. I've worked at A volume stores and ulv. Both types had salesfloor push pulls