By leading up to each heart honour in succession you can make 75% of the time - whenever North has the queen or South has the Ace. So I don't agree with the VuGraph commentators who suggesting leading towards the king and ducking South's nine. You would go down more than 25% doing that. So what are the extra chances over the initial 75%?
There are two I can see:
1. Play for either Ax in North or Qx in South. If the former, start the suit from West and if the latter, start it from East. They'll have to give you a ruff and discard after taking the second heart. Since South showed out on the third spade, Ax in North is more likely.
2. Play for North to have A109(x) or South failing to stick in the 9 or 10 so you can duck a heart into North.
Fantoni chose #2 and went down when #1 works. So which is better?
There may be some inferences from opponents' failure to bid but East started with 2♦ so it would be hard for them.

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