Buffer Area Straddle with Trucks

Is it possible to simulate a buffer area, where a truck/straddle is going deliver a container to the other one? The general idea is having two terminals with different operating system (Straddles and RTG+TT) but with a buffer area similar to the transfer area where an interchange of container could be possible if needed, avoiding not compatible equipment’s to operate on the other terminal.
It should be the same as a gate container delivery.

PS: I already try using housekeeping but straddles can't work as stacking resource.

This can be done by writing custom logic. You could write custom task sequence in stack/unstack trigger to send truck to buffer area(rack). And let strad load or unload container on the truck.

stack/unstack trigger must be at the block? or the truck/straddle? I really think this will help!

Stack/Unstack trigger is in yard planner miscellaneous tab. User manual explains how to use those triggers. You can use them to build custom task sequence, and let strads and trucks work in the way you want.