Select bands in QGIS/ProcessingToolbox/OTB?

Any otbcli can make use of band selection, eg.

otbcli_ExtractROI -in QB_1_ortho.tif?bands=1,2 -out example2.tif

is there an equivalent trick within the QGIS Processing Toolbox?

Indeed, one can’t use the extended filenames through the QGIS interface. It would be an interesting feature. And I don’t know of a trick…