In that case I would probably create a JS Code Extension, and develop some JavaScript specifically for duplicating the Tealium iQ events I wanted to have running in GTM as well. I haven't had a need to to this myself, so I can't shown you any ready example of this. But it certainly depends on what you specifically want to do, and will most likely need some JavaScript code to be made in Tealium iQ. Mayby you can find some more documentation about that in the community. If not, then you probably need to continue by reading up on the GTM datalayer in Google own documentation, or get someone to do it for you. My recommendation would be to dive directly into Google documentation.
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