Well I would hope If I was moving from Montana to Indiana 926A wouldn't expect me to make that drive without stopping to sleep.
2 things here:
1. As mentioned above, Illinois is fine in that scenario. 926A does not come into play, since it is easy to stay compliant within state law. Where 926A is important is a few really restrictive states such as NY & NJ.
2. But let's say you were moving from Maine to Delaware: If you were driving through NY or NJ, stopping to sleep in NY or NJ would put you at risk of felony incarceration. While this is very much a "gray area" of interpretation, people have been arrested & convicted for felonies merely for staying overnight in the restrictive states (and in at least one case for having to change a tire in the restricted state.)
I'm not saying the law makes sense or is fair. But this is how it has been interpreted by various higher courts over the years...
A few links & analysis:
https://www.nraila.org/get-the-facts/firearm-transportation/
https://thefirearmfirm.com/interstate-transportation-of-firearms/
https://www.combatbarbiefirearms.co...the-law/interstate-transportation-of-firearms
https://www.usacarry.com/interstate-transportation-firearms/
Also read No. 12-3621 ASSOCIATION OF NEW JERSEY RIFLE AND PISTOL CLUBS INC., v. PORT AUTHORITY OF NEW YORK AND NEW JERSEY. This case revolved around transport through an airport, but the ruling was specific regarding where a firearm may be "readily accessible" such as it would be if staying in a hotel. It had several implications on other methods of transport as well.
Another thing to be aware of is that 926A has been found to be not applicable for states who ban sporting rifles or magazines with capacities greater than 10. People have been arrested and convicted for those statutes even when complying with transport as defined by 926A.