The canal runs parallel to and then goes under the railway in Wolverhampton just north of the (High Level) station, roughly between the Wednesfield and Cannock Roads.
There are a couple of locks on this section, and I can recall sitting on the lock gates with a bag of chips watching the class 50 hauled ECS off the last Paddington - Wolverhampton (either the 1727 or the 1740 from Paddington, I can’t recall which) in 1987 or 1988. The area was surprisingly peaceful for being so close the ring road!
Near the High Level station there was a British Waterways building, and the track-bed of the GWR (Low Level) station was to the east of the High Level station.
The railway and canal also run parallel on the stretch between Tipton and Dudley Port.