Do the past perfect and future progressive ideas

Albeniz have to connect two ideas?

I don't understand your question. Can you ask it a different way?

Sorry I don't know what I was thinking. Do the past and future perfect tenses have to link together two ideas?

What is required in the future perfect is a time point in the future. Another idea is not required.

By the end of the year, we will have been using this iPhone for six months.

The past perfect needs some context in the past. Another idea is not required.

In December 1980, he had been working on his degree for seven years.

Oh thank you thankyou thank you. But the future links a time in the future to a time later in the future, right? So where are these two seperate times in your first example?

There is one future time reference (end of the year), and a time interval (six months) in the first example.
You do not need two different future times for the future perfect tense.

Time interval? What's going on? You need a time interval?

AlbenizTime interval? What's going on? You need a time interval?

But you asked about time references in my example.
Here is another example with no time interval, but it uses the future perfect, not the future perfect progressive.

Business is great! By the end of next week, we will already have made our month

I see. Is that a difference between perfect and perfect progressive?
Is there a book I should be reading on this stuff? Right now I have dummies.

The progressive (continuous) tenses use the verb+ing (present participle) form, eg.

I am running. (present progressive)
He was walking. (past progressive)
The bird will be flying. (future progressive)

The perfect tenses use have + past participle, eg.

I have run. (present perfect)
He had walked. (past perfect)
The bir

Thanks. Double thanks to Clive too.