Trying to figure out if I have two oil leaks or an oil and transmission leak on my 73 Duster 318

Few ideas for you. Fix the known leak. Clean and pressure wash. If you still have a leak and cannot tell if oil vs trans fluid get some fluorescent dye and add to your oil. Start looking for the source at the top of the engine working your way down to the highest part you see oil leaking. Leak will likely be at or above that point.