Wall mount toilet tie in to DWV stack in basement

[Fuegomal13]

In my basement remodel I have the main vertical DWV stack exactly where I want to put a wall hung toilet. It seems logical to just connect to the stack with a sanitary tee instead of the usual floor connection shown in every video. There is not really a distance issue as the Geberit tank/carrier will be right in front of the DWV stack.
Does anyone have tips or advice or experience with this sort of tie in?
Again, instead of turning to the floor to connect I want to go straight back to the main stack and connect to an inserted sanitary tee or long curve wye.

 

[Terry]

That won't work.
Every time the upstairs toilet flushes, it will push water out of the downstairs toilet.

Each floor must have it's own venting.

 

[Sponsor]

 

[Fuegomal13]

That won't work.
Every time the upstairs toilet flushes, it will push water out of the downstairs toilet.

Each floor must have it's own venting.

I was afraid that would be the case, so looks like the floors gonna get tore up instead. Thanks for the quick reply!