Can a level 6 focus be obtained at WBB in both Felucca and Trammel on OSI?
Yes
Also
Those places on OSI only require 5 people to get a level 6 (number of Arcanists +1 for a max of 6)
JOAT spell weaving focus lasts as long as a 120 spell weaving focus
A level 3 is........10,800 seconds needing 2 people
A level 4.......... 14,400 3 people
A level 5........... 18,000 4 people
A level 6.......... 21,600 5 people
**EDIT**
I think when they changed the timers on the Peerless keys the timers for the Arcane focus levels changed as well
1 hour per focus level
Those places on OSI will give a spell weaver with 0.0 to 120.0 skill can get a level 2 focus with any 1 person regardless if that person has the spell weaving skill or not.