Total hypothetical munchkinism. Say your a decker with an agent (Rating 6)running on your deck. A 'friendly' Technomancer has a Machine sprite (Level 6) running in your deck. The Machine Sprite rolled 4 hits on it's Diagnostic power. So once in side the Matrix, our fearless decker has his agent assist him with anything it is able to assist with (Cracking, Electronics skill groups). To make it simple just say it rolls average all the time and give it 4 net hits... Hacker had dice pool of 12 in whatever after everything he is doing is factored in (hot sim, programs, whatever....). His limit is 6 for whatever the action was.
So he gets to roll 20 dice with the new limit of 8? Just making sure that's legit (from what I have read and understood). And if it is I realize you could stack a few more sprites.... But trying to keep the example really simple...
Now the follow up question is - "Does the Diagnostic power of the Machine Sprite also affect defense rolls that use the Deck as a limit (for instance Willpower + Firewall defense tests)?
I am pretty sure about the first example, unsure about the defense test...