Pipeline!

Presonus outputs to Dig328 input

I noticed that the output of the Presonus is going into the line input of ch 1 & 2. I think this means that the presonus signal is also going thru the preamp of ch 1 & 2, and for sure the trim knob on ch 1 & 2 can boost the signal, in addition to the gain knob on the presonus. Could we insert the signal in the “Insert” input instead, bypassing the preamp? If we’re using the presonus preamp, then passing thru the Dig328 preamp too, aren’t we defeating the evaluation?