Now don't put FULL sentences in my mouth....
In learning from one Taiwanese instructor who was in the Han Chingtan lineage, there were several basic line drills.
One was simple block Gong bu punch...
The third was the Chaquan Wulu Tan Tui (#5 Tan Tui).
The second, however, was starting from feet together and fists at the waist, step to the left into Gong bu, block left hand punch right fist. This was then followed by kick right foot punch left hand. Then stepping down with the right foot, turn 90 degrees while blocking with the left hand and punching right hand while sitting in Ma bu.
This basic was then repeated turning to the right and doing it alternating sides. (we used to simply call it Block Punch, Kick Punch, Ma Bu Punch...and I learned that before I even heard of Tan Tui).
Since the Taiwanese teacher had only the lineage for northern that goes back to Han Chingtan...and Han Chingtan was, according to the information I was given, trained at Nanjing, that is the connection...
BUT...those moves are the exact first half of Wubuquan....so I am not surprised if there is a very solid background to traditional.
It strikes me more like someone took a piece of a training basic that was widely used in many places and schools....and then another piece from say Chaquan...and then worked out how to glue them together.