I have run into this a few month ago and I am still wondering about this itinerary. According to KVS and also other travel sites it gives the schedule below. Connecting time is 1h05m.
It seems to be o.k. I don't mean to dispute the minimum transfer time, I remember 1h10m and was wondering at that time why they would allow this flights? Any idea?

YVR Vancouver Metro / Vancouver Int'l BC CA = CXH YVR [CYVR]
SIN Singapore Changi SG [WSSS]
MON 17 Jul 2006

Carrier Flight From Depart To Arrive A/C St Availability
--------- ------ ---- --------- ---- --------- ---- -- ---------------------
OZ/AC 6101 YVR 12:00 ICN 15:25 +1 763 0 C4 D4 Y4 B4 M4 H4 V0
-> OZ/SQ 6783 ICN 16:30 +1 SIN 21:45 +1 772 0 C4 D4 Y0 B0 M0 Q0