Help me sort through this. In my mind there are now three different time-distortion scenarios between the island and the boat:
1-The probe disappeared from Regina's screen in seconds (while Regina and Daniel's conversation took place in sync). It's internal timer showed a 2:45 but Daniel's clock showed 3:15 elapsed time.
2-Sayid/Desmond's helicopter trip took 20 minutes on board, but was a day and half to the Islanders (and the people on the boat as well -- they had an in sync conversation asking whether the boat had landed right?)
3-If the morse code response was a lie, that's one thing. If the response was the truth, then the doctor died in the future and his dead body travelled back in time to arrive at the island ahead of the return morse code message.
In (2), the traveller (helicopter) perceived a normal travel time but was apparently stuck in a slowed-down limbo where time moved faster (in sync) on the island and on the boat.
In (1), the traveller (probe) perceived a travel time that was way longer than what should have taken less than a minute, but the island perceived an extra 30 minutes elapsed time on top of that.
In (3), the perceived elapsed time of the traveller (Doc) is unknown but is apparently a trip backwards in time from when he died (in the future) until he shows up dead on the island (before the morse code messaging).
So now, in transit, you can get caught in a tide that pushes you forward in time but also now a tide that can push you back in time?