You mentioned the reasons why your trains circulate on tracks you do not own, especially in the case of train 55.
How are the tracks cleared? At some point, did someone understand that a tree had fallen on them? I presume that Via Rail is not the one who removes trees that fall onto the tracks, because CN owns them.
To what extent can you exert a certain authority over railway operations?
In the event of an extreme emergency, can you choose to intervene if people's lives are at stake?