It's even hard to give an overview of the company in 30 minutes and he probably should as there will likely be new investors.
Overview of company - 30 minutes
Discuss the data - 20 minutes
Discuss NLC Pharma partnership 3CL sub - 20 minutes
Discuss road ahead - 20 minutes
Questions - 30 minutes
Could also be he has just an hour of material and didn't want to get cut off during Q&A.
The other conference call/open forum may not be open to retail investors as, wouldn't it just repeat the same stuff. What would make sense is the investment bank and the larger investor communities Gerald mentioned.
If both conferences are open to everyone, I would think you'd hear about it tomorrow so people could block out the time on their calendar. Even 1 day is short notice.