It's quite diverse. Some fanfics might show them forming an unlikely alliance to outsmart the system, while others might have them facing moral dilemmas that test their bond. The possibilities are endless, based on the author's creativity.
The development of Connor and Oliver's storylines in such fanfiction can vary greatly. Some authors might focus on their internal struggles and growth, while others might throw in unexpected external challenges. It all depends on the creative direction the writer takes.