"At what point in a relationship do you feel intimacy between two people
becomes appropriate?

If the chemistry is there on the first date, verbal intimacy's good. Physical intimacy can complicate things if initiated too early.
There's no right or wrong way to answer this because it's such a broad question that I think everyone would have different comfort levels and answers to give.
It depends on the individuals, really.

The question is too vague.

In most cases I believe it to be..when she says yes

i don't have a specific time frame & i don't waste time being intimate either coz i like intimacy & women i've been intimate with have never had a problem with me being intimate rather quick...they actually loved it

.

that all depends on the couple
some wait till there married
some do it on the first date <shrug>

I don't know if I understand the question.

Are you asking "when is sex appropriate in the relationship?"
Then I'd answer "when you both feel like having sex, and you're both willing to accept any and all consequences that may arise from doing so."

Otherwise you are asking "when is it appropriate to feel familiarity or closeness."
Then I'd say it's appropriate anytime.
But you need to be aware of how they respond to it.



With that, maybe you are asking "when in the relationship are you guaranteed to know how they are going to react to any advances or treating them with familiarity, when there is no risk to you choosing to behave a certain way?"

Then, it's never. You're never guaranteed anything.

Might be the first time you hold hands..

Outstanding!

Yes, a perfect response...

after one or two drinks...

When & IF the woman says it does.

.....will walk away frustrated, BORED, and feeling somewhat slighted. NO, not a one sided decision.

but will CERTAINLY walk away!

For a guy trying to be a gentleman
I suspect this can be kind of a guessing game based on a woman's body language and how well you are getting along

When she says "Hello"?

On well, all men get rejected. And the woman will be walking away too.

If you don't walk away, you may end up registered somewhere, because "bored & frustrated ", is not her problem

I really like the "Might be the first time you hold hands" comment. In reality it will come down to when she thinks its time and drops some hints as I'm am a bit cautious about screwing that one up. I would not want to ruin a wonderful thing by appearing to eager.

At the point when it is clearly consensual

no one is pressuring and no one is feeling pressured

hmmm..you aren't braggin' are you?

...their body language usually says... This is all for you... So hurry up and finish your drink and take me...