CPA Pixel Tracking Question

Say I have 2 networks promoting my offer, and both of their tracking pixels on the thank you page to signal the conversion. Will they each fire no matter where the conversion comes from? What about if its just from organic search and someone purchases...will that fire the 2 netwoks pixels? Or will it only fire if the user came from their link?

Sorry if this is a stupid question, but I have never had 2 pixels on the conversion page...and was curious as to how many installed would affect it.

I appreciate any feedback!

No, the pixel fires ONLY if the user was came from affiliate link of particular network. \
So,
- purchase from organic search will fire no conversions
- you'll got only 1 conversion if user is coming from any network affiliate link (to that network)