Before they went Retina, iMacs could be used as displays in [Target Display Mode](https://support.apple.com/HT204592). Is this possible with the new Touch Bar / USB-C MacBook Pros (late 2016) via the USB-C ports? They don't have a Mini DisplayPort-style Thunderbolt 1-2 port, and the [support article](https://support.apple.com/en-us/HT207256) about connecting various things to the USB-C ports doesn't mention an iMac. Neither does the [article](https://support.apple.com/en-us/HT207266) that explains what can and can't be used with the USB-C to Thunderbolt 2 adapter.