I am using WixStandardBootstrapperApplication in bundle It will install .NET 4.8 and one MSI package, Can find code below,
<BootstrapperApplicationRef Id="WixStandardBootstrapperApplication.HyperlinkLicense">
<bal:WixStandardBootstrapperApplication
ThemeFile="theme.xml"
SuppressOptionsUI="yes"
LicenseUrl=""/>
</BootstrapperApplicationRef>
<Chain DisableRollback="yes">
<PackageGroupRef Id="NetFx48Web"/>
<MsiPackage Id="myMBS"
SourceFile="$(var.Mbs.Updater.TargetPath)"
DisplayInternalUI="yes"/>
</Chain>
Inside that MSI package we have Custom Action to LaunchApplication after InstallFinalize
<InstallExecuteSequence>
<Custom Action="LaunchApplication" After="InstallFinalize" />
</InstallExecuteSequence>
So we don't need to StdBAs bundle to show Success Dialog, How to skip that I have researched but didint find any workable solution