Past perfect progressive

I get the impression that the speaker woke up a short time before the other person came home.

Thank you very much indeed, GPY.
I've once heard that the present perfect progressive and the past perfect progressive are 'parallel' in meaning.
From the expression "He has been sleeping." I get the impression that he has kept sleeping up until now and he will be sleeping for some time into the future. What is your take? Or, are the past perfect progressive and the present perfect progres

seagullI had been sleeping when she came home.

I would say I had been sleeping before she came home [ awake before arrival ] or I was sleeping when she came home / I had been sleeping for an hour when she came home. [ awakened by arrival

seagullFrom the expression "He has been sleeping." I get the impression that he has kept sleeping up until now and he will be sleeping for some time into the future. What is your take? Or, are the past perfect progressive and the present perfect progressive not 'parallel' in that context?

For me they seem parallel in this case.

If you say "He has been

GPYThis is not totally clear cut though.

Quite.

We cannot attempt to infer totally clear meaning from the tense used in one sentence in isolation.

seagullI think that the speaker probably woke up when the woman came back because the past perfect progressive is used instead of the past progressive. What is your opinion?

My sense of it is just the reverse.

"probably woke up when the woman came back" ~ past progressive
"probably woke up just before the woman came back" ~ past perfect progressiv

Thank you so much, Phillip. I've learned a lot.
I think I will be careful when I use expressions like these.

Thanks a lot again, GPY.
I'll study more about these tenses along the line you showed me.
I've also learned from your statement that this is not totally clear cut.

Thank you very much, fivejedjon.
Unfortunately, we, ESL students, often come across these choppy, ambiguous sentences when learning. I'm always grateful for everyone because I can get valuable lessons here from native speakers' point of view.

Thank you very much, CalifJim.
I think I will have more exposure to English and brush up my perception of tenses.