So, you didn't really make any attempt.
You have no evidence of intent. If you had you would present it.
The do ent dump provided a giant nothingburger of PR people doing edits of press releases.
Given that responses have to be timely, it is entirely possible whoever was doing this (as well as all the other FOIR's that come in) just couldn't get the information needed on a timely basis.
I have dealt with various open-records open record requests. Trying to figure out who has the information, then get it, and get it back in time is not easy in a small bureaucracy, let alone a large one.
Meh. It benefits you to say "they lied" because that sounds so much more sinister than "the got lost in the gears before he time limit ran out".
Keep digging though. There were witnesses to the meeting. If it was obstruction, then we should know about it.
Too bad you aren't as concerned about President "vroom vroom" Trumps money-laundering. But hey, everything is ok as long as they have the magic "R" behind their name...