Agreed. Eiglarsh keeps regurgitating Trial Practice 101. Well, guess what? 30 years of prosecuting big crimes allows one to develop their own style. JM has been doing this day in, day out for 3 decades! He knows what he's doing. He goes in with a very definite strategy (Eiglarsh would have Juan reading from typed questions), and he pursues it. No matter how evasive or cantankerous the witness, he hammers the points until he gets what he wants. That's the mark of success and experience.
I'd like to point out, again, that JM likely has a team of folks back at the office doing support work for him. I am sure that someone found every mention of ALV on the internet, watched every youtube, read every book and seminar materials, etc. The team brings stuff to JM, and he no doubt carefully reviews all of the important stuff. When court ends, JMs day is just beginning. He's an awesome courtroom lawyer. When some TH said that defense lawyers are more skilled at cross than prosecutors, I wanted to scream. How many witnesses do you think JM has crossed in 30 years? Far more than Eiglarsh or any of the other TH defense lawyers, of that, I am certain.