Does the battery last any longer using LTE, then with Bluetooth?

I just got a Watch 5 44mm, and honestly it's just too big.

I'm thinking of selling it and buying a 40mm. I've read that the battery life is shorter on the 40mm, but am wondering if using the LTE makes a difference to battery life, rather than always being connected to Bluetooth? Or if it doesn't really make a difference either way.

Thanks!