Yes. Investigation is hard work. It's not like tv shows or the movies where the case is solved in an hour or half hour. Forensics takes time. Good investigation takes time. Two months is very short time for any investigation. They are doing what they can here and I'm sure they have more evidence than we could possibly know about at this time. They don't owe us explanations, they don't owe us the whole case wrapped up perfectly, heck, they don't owe us anything. LE is not out to please the public, they are out to get justice for victims. I'd rather they take their time than let someone guilty get away because they decided to go fast and hard, and not slow and efficient.
Agreed and maybe you have informtation that leads you down one path and then you suddnely realize that path is wrong and you need to backtrack. Doesn't mean they made a mistake - they are investigating.