Xbox Series X hands-on previews
CNET
The Verge
https://www.theverge.com/21458254/microsoft-xbox-series-x-load-times-performance-gameplay-preview
VentureBeat
https://venturebeat.com/2020/09/28/xbox-series-x-impressions/
IGN
https://www.ign.com/articles/xbox-series-x-hands-on-load-times-quick-resume-and-compatibility
GameSpot
https://www.gamespot.com/articles/xbox-series-x-hands-on-preview-less-waiting-more-gaming/1100-6482656/
CNET
The Verge
https://www.theverge.com/21458254/microsoft-xbox-series-x-load-times-performance-gameplay-preview
VentureBeat
https://venturebeat.com/2020/09/28/xbox-series-x-impressions/
IGN
https://www.ign.com/articles/xbox-series-x-hands-on-load-times-quick-resume-and-compatibility
GameSpot
https://www.gamespot.com/articles/xbox-series-x-hands-on-preview-less-waiting-more-gaming/1100-6482656/
Interesting bit on Xbox Series X's storage by IGN: there is 802 GB of usable space available, rest is OS and system files
(These are minutes, not hours)