Need to See Both Original Caller and Forwarding Number in Call forwarding

When customers dial Phone Number A, I forward the call to an external number B using the Dial Plan Editor. Number B is tied to my AI Voice Bot via SIP trunking.

However, depending on how I configure the call forwarding, either the customer's number or Phone Number A shows up as the caller on the SIP INVITE received by my bot — but not both.

My requirement is for the bot to have visibility into both the original caller (customer) and the original number dialed (Phone Number A). Is there a way to include both pieces of information in the SIP headers (e.g., From, To, Diversion, or custom headers)?

Any guidance on how to achieve this with GoTo Connect would be greatly appreciated.