Steep 4 tbsp ground coffee in 3/4 cup boiling water in a french press for 4 minutes. Strain and set aside.
Steep 2 chai tea bags in 3/4 cup boiling water for 5 minutes.
Combine steeped chai and coffee. Add oat milk and stir.
Sweeten with 1/4 cup brown sugar syrup or any sweetener you like! Serve over ice and enjoy!