Hi Peter,
We have analyzed your query, In resource-view Gantt we can assign dependencies for tasks and task date values are validated according to its dependent tasks. But connector between the tasks are not shown because same task can worked by multiple resources, hence tasks are displayed in multiple rows. Due to this connector lines are not drawn in resource view.
And we can view/update the predecessor relationship by double click(editing) the taskbar, when we save the new value in edit dialog, task date values are updated with predecessor values.
Please find the demo sample from the below link, were we can view/update the entire task details by perform double click on the taskbar.
Please let us know if you require any other assistance on this.
Regards,
Suriyaprasanth R.