Yes, it can. On the Tamagotchi iD L Princess Spacy ver. activate the heart icon. A connection menu will appear. Select the 3rd option on the first menu page.
Connection menu on the Tamagotchi iD L Princess Spacy ver.
(page 1)
Tamagotchi iD L
Tamagotchi iD
Plus Color (TMGC+C)
Download
(page 2)
Special (Heart DekaTama at TamaDepa in Harajuku, Tokyo, Japan)
I just got finished trying it for myself. Unfortunately, I couldn't get it to work. No matter which settings I tried, or which one I pressed B on, the result was always an X. I guess it's just not a feature available.
The Princess Spacy can definitely connect to the regular iD L, although someone probably already said that.
EDIT: I remember I have previously connected my PS to my +C when testing my new PS's infrared, so it does connect to that, just not to the Hexagon it seems from previous posts. I wonder why. I don't have a Hexagon so I can't try for myself.