This article will show you how we can pass the setup.exe language selection from main installer should passed to Pre-Requisites and chained MSI in Basic MSI Project Type
In a multi language project with multi language chained msi and prq files when user selects a language the same language should be passed to chained and prerequisite exe as well.
Yes It is possible to pass the Parent(main) installer language selection to child msi or prerequisite by following below steps.
Steps for prerequisite to install same language with parent:
How to Create PRQ
InstallShield Prerequisite Editor Reference