It doesn’t matter. Only a complete idiot would think that this wouldn’t be overturned quickly... with compensation having to be paid to BC and oil companies, and probably Canada too.
The Government of Canada owns the pipeline.
https://www.cbc.ca/amp/1.5101561
Compensation paid to BC for what? BC isn't paying for it.
Maybe the feds own it but if BC thinks it can dictate what comes out of the pipe, Alberta can certainly dictate what goes into it.