It's been established that an 2019 UA artificer infusing Repeating Shot on a hand crossbow does not need a free hand to reload it, as it produces its own ammunition (and the weapon itself is not two-handed).
If one were to infuse two hand crossbows with this infusion, would the artificer, or another person be able to use two-weapon fighting with crossbows?
It's redundant with the Crossbow Expert feat, but still worth asking.
Best Answer
No, you cannot
The rules for two weapon fighting start like this:
Regardless of the loading property, a hand crossbow isn't a melee weapon so it doesn't qualify for two weapon fighting. As you noted, you can do two attacks with hand crossbows using Crossbow Expert - although, notably you can do the two attacks in that case even holding just one hand crossbow due to the wording of the feat.