Sure. Was on PVG/HKG/SIN with 1 hr connection in HKG to the same flight as my wife and kids to SIN. Inbound flight delayed, arrived as the SIN flight took off with wife + kids on board. Was handed new CX boarding pass as I came off the jetway for next CX flight in 3 hours 45 mins. Went to MPC lounge and asked the girls for help. They said:
- No interline agreement with SQ, which had a flight leaving in 1 hr 45 mins.
- Would I mind buying another ticket (no). I said no.
- Oops, SQ flight sold out.

So I resigned myself to a 3 hrs + wait. Was having a drink, and they came back 15 mins later with a seat on the SQ flight I had hoped for:
- No charge.
- Sorry. no aisle seat.
- Please come with us to SQ check-in as there wasn't much time left.

Wrote to CX to compliment them, never received an acknowlegement. Have other cases like this.

Have recounted this and other stories to super SQ PPS diehards. All agree it is as pointless for one to expect this of SQ as it is to expect CX to match SQ's hardware.