Yeah in this game they only added DGI to the Flashlight, and even then it’s only enabled in very rare and controlled circumstances (like in the image, when you’ll really notice it).
You could use Light Propagation Volumes for this. They’re not super high-quality but you can decide which lights affect the LPV volumes I believe… it’ll take some setting up. Honestly unless you were going the full DGI route, I’d avoid it entirely and just rely on a soft point light, that casts shadows. The SSR might help ‘fake’ GI a little bit (totally different effect but it can add a lot)