Yes, especially where the parents are cooperative.  Even so, changes are occurring in this area.  It appears that courts are increasingly recognising that sometimes the parent the child resides with fakes miscommunication and projects a lack of the other parent’s capacity to cooperate to try to prove that the joint decision making between them is not appropriate.  In the case, Proulx v. Proulx, 2022 ONCA 428, the Court of Appeal upheld the trial court’s decision where the trial court had examined the parents’ relationship and found that joint decision-making was appropriate. This was despite the mother’s evidence that the father was violent towards her, despite the criminal charges against him of uttering threats, mischief to property and assault against her, none of which were proven in criminal court, and for which the husband was fully acquitted.   The court had found that despite the allegations, the parents had been able to communicate about the child, even though it was largely through the Husband’s new wife.  That court said that it was not necessary to have perfection in communications between the parents so long as the communication that occurred served the child’s best interests.  In this case, it did. The court noted that throughout the duration of the family law proceedings, the parents were able to obey court orders concerning their son. To that extent, both parties had acted in the child’s best interests.  This is an interesting judgement:  it seems to be made with the knowledge that often when court appearances end, many parents drop their defences and return to life as usual, without the battlefield.