C'mon Brian: we all know what each means don't we. Let's not beat about the bush. There is no room for interpretation here.
What happened on that dark cold night was that the Captain of that a/c heard the words: land immediately but convinced himself that this would all be OK and physically flying his currently "flyable" helicopter into a bitterly cold wet place surely could wait a little longer. He stretched it and stretched it....he went into denial hoping to glimpse land.
It's all very well nodding and agreeing to what land immediately means in the warmth of the cre room or in the sim....but for real....an individuals psychology comes into play.
What 'may' have cleared the fog of judgement making would perhaps have been a better understanding of what exactly was going on in his gearbox!
RIP.