I think, this is possible, however requires alot of help from friends/guildies and need an exact leveling strategy.
First of all, you must always have the rested XP bonus, when you start questing and grinding. So you make your new char, enter the game, then logout and wait 1 week (or something like that), until it's fully rested. So you can kill with double XP. When you don't have any more rested bonus, logout again and continue 1 week later. Also you should logout everytime you take a break, even if you just take a piss (every minute counts)
Even if you level alone, you will reach level 60 very fast (thanks to the changes in 2.3).
Also you should get extreme support:
- you are summoned everywhere (back and forth between quest givers and quest locations). ofc you logout, when the "summoning team" starts moving to the new location and login again when they arrived
- you start leveling with a fully enchanted gray/white gear and upgrade it every 5-10 levels, but latest at level35, when you can have all the end-game enchants
- you are healed everywhere (ofc not grouped with the healer)
- others help killing your mobs (ofc not grouped with them either)
So i think, if you get all the support on earth, it's doable to level from 1 to 70 in this short amount of time. But keep in mind, that 1 day 2 hours played time doesn't mean, that he leveled from 1 to 70 in 26 hours. More likely it took several weeks to do this
