If say this, then I presume is actually Route 3 -> Queens Road.

Mapillary is difficult to click in this area, but it seems Whitty Street is just a generic internal road and might be highway=unclassified instead. Also/Then, consider "[...] -> Western Street -> Queens Road", which seems to be planning-intended path.

No matter what happens, having a free-standing highway=secondary among highway=tertiary segment does not fit into the overall "coherent hierarchy" principle. Low-resolution rendering would show this segment of highway=secondary with no obvious reason of existence.