FireWire connections are not designed for this operation. FireWire has a length limit of 15 feet. FW Repeaters are not supported.
Two AI Consoles can be cascaded via FireWire, giving you more inputs, acting as one large console.
What you need, is RML32 at your broadcast spot, connected via Network (Cat5/6) using AVB to the SL24AI w/ AVB Option Card installed.
You will then be able to source all 24AI inputs at the RM console over network. These would be Pre-DSP / Pre-Fader signals. You can then add DSP for each channel as a completely independant mix for broadcast stream.
Contact our Sales Support agents for more information.