Difference between two sentenses

Anonymous1) I have watched TV for three hours.

Use that when you have finished watching.

Anonymous2) I have been watching TV for 3 hours

Use that when you're still watching.

Well, there is always not just one situation where a verb tense is used.
1 is used for instance when you want to tell someone that you have watched TV for a considerable amount of time and so you do not want to watch it any longer.
It can also be used when someone asks "What have you done today?"
2 is used to tell someone that you started doing something in the past and is

Present perfect with 'since' & 'for' has same meaning to that of present perfect continuous i.e. action is still continuing
Is this true for all verbs? Does verb "watch' include in that?

AnonymousPresent perfect with 'since' & 'for' has same meaning to that of present perfect continuous i.e. action is still continuing

Not necessarily.

Can you create some context where the sentence "I have watched the TV for two hours/since morning." interprets the watching TV is still continuing? (Meaning like a present perfect continuous.)

No context is needed beyond what you have already created:

Anonymoushe watching TV is still continuing

I have been watching TV since this morning.
I have been watching TV for two hours.

Sir, I want a examples in present perfect tense which has the meaning that the action is still continuing.
Please give the examples other that state verbs & except verbs live, work, learn, study, play.
Intention here, I want to know how the verbs other than mentioned above mean "the action is continuing"

Over the years, he has grown in knowledge and wisdom.

Thanks a lot. Expecting more examples to clear the confusion