A week passed and there wasn't a single day where Arnold did not spar with Tiamut and Talos. Arnold had also finished building their gears and they were testing it out on each other. Thanks to the reinforced armour Arnold had made for Talos, Arnold was now able to use his fists at 85% of its full strength. Which in Arnold's eyes was more than enough as he did not expect them to fight anyone who was even as strong as that.
Call it arrogance or overconfidence, but even System sama had to concur to that fact. If there was someone even as strong as Arnold they would have already gotten to know about them. As for what Johnny and Nicole were doing during this time... they too were exchanging fists trying to prepare for the next round.