Welcome to the Hook Productivity Forum , @scrollsgeek.
I don’t know if DEVONthink has an API for linking to specific pages. There’s a relevant thread here Clickable Link to Specific location of document? (eg. TOC - DEVONthink / Tips - DEVONtechnologies Community [Over on DT forum] that I just skimmed. If there is, then it should be possible to do what you suggest. The key is to get a deep PDF URL from DEVONthink. Then you can hook the two together.
Curio’s latest update supports linking to specific PDF pages. Congrats to @georgezengobi !! More on that in a different topic soon. (@jpbogers asked a related question that mean to answer in relation to Curio: Combining hook with screenshot - Discussion & Help - Hook Productivity Forum ).