Perfect Continous

[makaveli]

Hi there!
I know we use Past Perfect Continuous when an event in the past continue up until another event in the past
I.e: I had been talking with her for over an hour before Tony arrived.
Can we use it when an event in the past continue up until a specific time in the past?
I.e: I had been talking with her until 8 o'clock.
I have the same question here with the Future Perfect Continuous. Can we use it if the event continues up until a specific time?
I.e: By 8 o'clock Tomorrow, I will have been jogging for 10 hours.
I will have been jogging for 10 hours until 8 o'clock Tomorrow

Do we use the perfect continuous forms when an event continues up until an another event or time and even further in the past or the future
I.e: I will have been jogging for 10 hours until 8 o'clock Tomorrow
That can means I'll stop the jogging at 8 o'clock and it can means I will continue my jogging after 8 o'clock. Is this right?

Thank you for the answer in advance!

[Alan]

I had been talking with her until 8 o'clock.

is acceptable.

Your second should read

I will have been jogging for 10 hours by 8 o'clock tomorrow.