Thanks for your reply Andreas. I should have written, that none of the input bands to the BandMath operator were forwarded to the second without adding the second link (the one you proposed to remove). That was the reason that I added this, since I needed these bands together with the output of BandMath for my second BandMath operator.
Side-note: The Graph Builder appears a little bit buggy to me and sometimes complains that it does not find the input bands from Speckle-Filter (e.g., Sigma0_HH), e.g. after removing BandMaths(2). Editing the xml directly and edit the Source name or remove and re-add the ‘failing’ module usually fixes it, but it can be challenging to figure out which module that is causing the error. Clearer error messages would be a much appreciated improvement to future versions of the Graph Builder.
Anyways, I wonder if the name format somehow changes when using two sources in a module? E.g. if I add two sources (Speckle-filter and the output from BandMath) to the LinearToFromdB, I can see the following names of the available bands (variable name, double colon, and the filename):
However, I would like to access the variable names without locking them to the file that I currently process.