Yes, I agree that avoiding confusion is most helpful, DrJack.
Wasn't my intention to sow any seeds of confusion, but I think my comment reflected my own experience of there always being an element, or vibe, of "you can never be quite sure", when it comes to immigration offices. In recent years my office (Korat) HAS maintained more & more consistency, but I still find myself trying to second-guess how they could, or one individual there could, out of the blue, decide that 'this or that' is the rule that day. Hence my agreement with the idea that if they say, for example, 2 months in bank, I'll put it in for longer, if I can, just in case.
And by the way, I totally agree with anyone who calls me 'paranoid'.
But anyway, DrJack, what you say is correct, well-said and is sound advice. 👍