Yes, you could tap into it. It's just a 0-5v signal. My Innovate wideband has 2 outputs, so I use 1 for the gauge and 1 for megasquirt.

Well, you would need to put the CLT sensor somewhere in the water and the IAT sensor somewhere in the air intake intake. I drilled and tapped a hole in the water neck for the CLT sensor, and I tapped the EGR hole in the intake manifold for the IAT sensor. If you search, you can find what other people have done.