Need to bleed?
If nothing in the hydraulic system was touched, you might be ok. You won't hurt anything by connecting the lines and testing it out... see if pedal pressure feels normal and if the clutch is engaging and disengaging as it should. If everything is working properly, you're good to go.
If there's even the slightest bit of difference in feel, I'd bleed the system just to be sure. It's a quick and easy process, no sense not doing it.
Most likely I'll be leaving it as is and testing it out tonight. Only thing that bites is that fitting that connects into the slave cylinder is a pain to remove if I do end up needing to bleed the system...

