Can we describe a continuous action after/before another continuous action in the same sentence using different continuous tenses?
For instance something like that:
Before I have been reading several times, I had been swimming a while in my pool.
As we all know, we can use past perfect combined with simple past:
When Jane had seen the elephants, she wanted to see the giraffes.
Here, the actions are not continuous. Jane had seen the elephants (at first, and then) she wanted to see the giraffes.
My question is whether it is valid to build such sentences with continuous tense forms?
After Jane had been watching elephants a while, she has been walking a while to the home.