Using BIMP to auto overlay pairs of images

[seanspotatobusiness]

I would like to use the BIMP plugin to overlay my (hundreds of!) images in the following way. My images are named in this fashion:

Blah blah 1 - A.tif
Blah blah 1 - B.tif
Blah blah 2 - A.tif
Blah blah 2 - B.tif
Blah blah 3 - A.tif
Blah blah 3 - B.tif

I would like to create the files:

Blah blah 1 - C.tif
Blah blah 2 - C.tif
Blah blah 3 - C.tif

by overlaying image A on B using the 'Divide' image option.

The BIMP plugin is utilised via File > Batch Image Manipulation. Then, in the 'Manipulation Set' section, I click 'Add' and select 'Other GIMP procedure'. None of the many procedures contain the string 'overlay' or 'divide'. Can I procede with BIMP or doesn't it do what I'd like to do? Would writing a Fu-Script be trivial (I've never programmed a computer before, apart from once when I made a turtle move around a screen in some laughable school IT exercise).

Thanks a batch.

[alessandrofrancesconi]

I'm afraid to tell you that BIMP was not supposed to do that kind of operations, they are not actually "batch" functions.
Also, a Script-Fu won't automatize this work if called under BIMP, as far as I know.