Whisk all marinade ingredients in a bowl. Reserve ¼ of marinade for basting.
Place steaks and shrimp in separate containers. Pour remaining marinade over each. Marinate steaks 1 hour, shrimp 20–30 minutes.
Preheat grill to high. Oil grates and let steak rest at room temp 20–30 mins.
Grill steak 4–5 mins per side for medium-rare. Let rest 5–10 mins before slicing.
Thread shrimp onto skewers. Grill 2–3 mins per side until opaque and charred.
Drizzle reserved marinade over steak and shrimp before serving.
