Had the same question of an old instructor of mine. He said it depended on how you logged it and that technically if you have a map on your knee it becomes x/c.
eg a flight logged as Essendon scenic would be hard to justify as x/c
Essendon, MCG, Westgate Bridge Essendon however (say same route) would count as x/c. (or even EM-ML-EN for arguments sake could be seen as x/c)