InstallShield Setup.exe calling multiple other Setup.exe - can't run silently
I've received a InstallShield based Setup.exe, which executes four other InstallShield setup.exe files.
I'm able to to run the first install silently with /S /f1"setup.iss", but then the next Setup.exe is asking me to go through the installation.
I've tried to run all of the setup.exe installers seperately, but it seems like the "outer" Setup.exe is installing features, which lies beyond the steps I'm able to automate.
I've tried to repackage the installation with Wise, but it seems to be too complex, or maybe I'm just lacking Wise skills :-)
Does any of you have any suggestions? Manual installation isn't an option.
Thanks in advance,