Thank you for contacting us.
Regarding your concern about your two HDS Live units and ActiveTarget 1 and 2, I wanted to confirm where you have mounted your ActiveTarget transducer. Is it on your trolling motor shaft? You can use both ActiveTarget transducers with your two HDS Live units. You can set one unit to forward mode and the other to down mode. There will be no interference when using both simultaneously. However, please note that you cannot use the 180-degrees and Scout + Scout Wide with this setup, as those features only work with the HDS Pro units and require two ActiveTarget 2 transducers.
For any other concerns, please don't hesitate to reach us back. Always stay safe and have a great day ahead.
Thank you for choosing Navico products!
Regards,
Ernest
Navico Technical Support