How to access the overall runtime in pytest?

There is the overview in pytest after running the test:

============= 7 passed in 1.11 seconds ============

I like to access the time (here the 1.11) in the end of pytest.

some helpful information I found already here:

How can I access the overall test result of a pytest test run during runtime?

But did not match the overall test run time.

I tried to use the def pytest_sessionfinish(session, exitstatus)

I did not find the overall duration there.

It looks like the value is inside the RunResult object. https://docs.pytest.org/en/latest/_modules/_pytest/pytester.html#RunResult

How to access?