What happens when 2 of the most prominent 5G bands (sub-6GHz and mmWave) are combined over 1 network? Potentially enhanced speeds and utility, according to AIS. The Thai mobile carrier and broadband provider has partnered with Qualcomm and ZTE to show a working example of this technique in public for the first time.
https://www.notebookcheck.net/The-world-s-first-5G-NR-DC-demo-achieves-over-8Gb-s-speeds-in-Thailand.611375.0.html