Imagine Dick and Jason getting together for beers once a week
It had started off innocently enough, the two oldest Wayne boys comparing notes on cases that they both happened to be investigating at the time. Sometimes they would be at Jason's place in Crime Alley Gotham, other times it would be in Dick's place, a loft conversion in a slightly decent part of Buldhaven. They would offer the other a cold beverage to make the talking easier, less likely to bring up bitter memories for the both of them. The trips never lasted longer than it took to down one and happened only very occasionally.
And slowly it turned into a social thing. Before they even knew what was happening ,Jason and Dick catching up with one another every 4 months or so, keeping tabs on each other's love life, bemoaning the trashy TV that was on, and commenting on how the pizza in Buldhaven was so much better than Gotham, and how Dick should have brought some if he didn't want to eat the common man's food. And the trips lasted as long as two six packs, one for each of them. Always the other would be sent home with instructions to call in, not that they cared, but Alfred would probably have their hides if they didn't.
Finally the two would meet up, once a week at the minimum, on patrol, at the other's place of residence, on occasion at home, called in for an emergency lift both in and out of costume, once in a jail cell, they had both been caught skinny dipping in Gotham harbour, the media had had a field day. Alfred and Damian had not been amused, Bruce and Tim were too shocked that both brothers been in a confided space together for a whole night and not come out of it with anything worse than a hangover to comment.
All in all, they wouldn't say it was the worst arrangement to have.