Can I know if after buying a loop ticket, I can get off at Santao station and take the Flower Pagoda line back to Santao station, then take the island circular line again?

Purchased a round-trip ticket for 2 lines, allowing boarding at any stop once per journey because only scan the code upon boarding and not when alighting.
“Within-island line is yellow, entering and leaving the island to ShanTaoSha is green, yellow and green tickets are not interchangeable.”
You can, just go scan it straight away.
You can, get off at a midpoint and then board again.