Yes you can do a "continue scan" to get all of the 20cm scanned,
But if that was the initial idea about "auto scanning" you would have put 34cm (2X17cm) on the webpage !

it feels like you are just trying to come up with any explanation, that's like saying, you are not scanning right

and with that statue, you would have to scan 3 times
1- all sides up to 17cm
2- laying on it's side for details front part above the 17cm
3- laying on it's other side scanning details of the back part above the 17cm
(not accounting for the top part details, because I know that would require a separate scan, if I would want to scan in 1 time)
the only way to scan that statue in 2 scans, is to put the statue on its head for the second scan,
but then you would have to create a support, so it won't fall over !