Simply, My current capture method is to take the input.wav file from the two outputs, leaving one dry and the other stereo into the audio interface through the effect you want to capture.
This way, the two tracks can be recorded simultaneously with almost no latency.
This allows for very accurate captures.
Hope this helps.
Basically, I am using Logic X Pro.
I use several gears in my environment, but the easiest way is to use DWARF.
Import the input.wav file into DWARF’s audio track folder and connect the audio file player output 1(L side) to outputs 1-2.
Then connect DWARF output 1 to input 1 of the audio interface, output 2 to the input of the gear you wish to capture, and its output to input 2 of the audio interface.
This is all there is to connecting the hardware.
Once connected, simply start recording in your DAW and play back the DWARF audio track.
Please note that you will need to prepare a separate track in your DAW for each audio interface input.
When the audio tracks have finished playing, simply stop recording in the DAW and export each track.
The sampling rate of the project must be 48 kHz, as the tracks to be processed by colab notebook are specified.