Here is a link to a lawfare article on the Meadows hearing. It’s a very detailed overview of what happened.
First, re: removal generally Meadows has to show evidence of 3 things:
To get his case “removed” to federal court, Meadows needs to establish three things. The first, that he was a federal officer at the time of the alleged offense, is not in dispute. The second is that the conduct alleged against him has a “causal connection” to federal office. The third is that he has a colorable federal defense against the charges.
Tying it in the the Judge’s latest order/request - asking if on overt act as legit Chief of Staff (CoS) duties would be enough to remove to federal court (ie, element 2) - the article talks about that; and the Judge was asking questions sort of about that at the hearing:
Before Wakeford [Prosecution attorney] returns to his seat, [Judge] Jones peppers him with a few questions. Noting that Meadows has disputed two of the “overt acts” alleged in the indictment, Jones wonders if that would be sufficient to negate the state’s case against removal. Wakeford contends that it does not. Under Georgia’s RICO law, he explains, the state does not need to prove every overt act alleged in the indictment.
…
[Later, at the end of the hearing] Judge Jones responds by saying that the court will try to act “as fast as possible.” But he notes that this case will likely set precedent for future cases, and there isn’t much case law to guide his decision.
During the hearing, Meadows went through each act in the indictment to explain his legit version of it or to say it did not even happen. For the things he did, but claims he did them properly as CoS, if true, then he has a federal defense that shields him from State prosecutions - Supremacy Clause Immunity - you can’t charge me with a crime for doing my job as CoS.
All this to mean, it looks like Meadows has proved two of the elements (element 1 - federal officer, element 3 - defense). It also looks like re: element 2 - Meadows conduct having a connection to federal office - the Judge believes one of the overt acts in the indictment is possibly Meadows acting properly in his CoS role, or the Judge would not have asked about it after the hearing. Whether that is enough for removal to federal court, the Judge does not know but will nonetheless have to decide and let everyone know the reasons for it.