for some time

[navi]

1) He is living at their place while they are in Italy.
2) He was living at their place while they were in Italy.

Does that necessarily mean that he is/was living there during the whole
time they are/were in Italy?

3) He is living at their place while they are in Italy for some time.
4) He was living at their place while they were in Italy for some time.

Could 'for some time' modify 'is/was living'?

Could the sentences mean:

A) For some time, he is/was living at their place while they were in
Italy.

--
Gratefully,
Navi

Lost in the Twilight Zone of the English language
Obsessed with ambiguity
Interested in strange structures

[LionelEdwards]

Post by navi
1) He is living at their place while they are in Italy.
2) He was living at their place while they were in Italy.
Does that necessarily mean that he is/was living there during the whole
time they are/were in Italy?

No.

Post by navi
3) He is living at their place while they are in Italy for some time.
4) He was living at their place while they were in Italy for some time.
Could 'for some time' modify 'is/was living'?

"for some time" extends all the possible interpretations.

Post by navi
A) For some time, he is/was living at their place while they were in
Italy.

Yes.