Welcome!
First of all, the gender doesn’t make one bit of difference in a bond. Weather or not two rabbits get along and how hard the bonding process is depends on their personalities. Your bunnies fought because they hit puberty and their hormones made them aggressive. Most likely you would have had the same result with two females, or a male and female (in this case you likely would have ended up with a litter on top of it, so you got lucky there
).
I’ve had a very similar experience with my two boys as Binx did. I got them as babies, not knowing any better at the time I put them together right away. I got lucky, they got along and their bond remained the same through puberty. I don’t know if they were simply mellow enough to get along whole hitting maturity or if I got incredibly lucky timing their neuters but it worked out.
Anyway, there’s no reason whatsoever to assume your two couldn’t be rebonded just like any other pair. There are a lot of bonding experts here, they will be happy to help you. Laying next to each others cage can be a good sign, but it doesn’t have to be. Sometimes it’s more of a passive aggressive move. Since they can’t get to the other bun, they try to assert their dominance by attempting to look as comfortable and worry free as possible in the presence of the other one. It’s like they’re saying “You don’t rattle me, I’m the boss here.” But in your case I think that graduating from fighting through the bars to laying next to each other could really be a good sign.
As Binx said, starting bonding on neutral ground is important, any place that is unfamiliar to them and a little bit scary (slippery floor, unfamiliar noises) is good. The point isn’t to terrify them of course, but you want them to seek comfort in each other rather than focus on fighting.
Good luck, don’t get discouraged. Bonding can be a lengthy process, but if you put enough time and effort into it, most rabbits can be bonded.
Edit: How long have they been neutered? You want to wait at least 4 weeks after the neuter to start bonding, because their hormone levels can go crazy during that time.