All information presented so far is accurate.
Our (Oz) book says pass "tracking instructions". This mostly means we say "track direct (insert waypoint here)" but could also be "continue heading 240 for pilot intercept of the 240 radial of the *****nuckles VOR" or somesuch.
Flights are generally planned via routes that (theoretically) provide some sort of separation during high workload (when an ATC should not be pushing the track shortening) or during radar failure. When its quiet & everything is working you can relax it a little.
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