Also good for adding to a positions
Benefits

Lets say you have a position on a Volatile pair, EUR/JPY

The pair trades at 138.50 and thats your short, you put orders to sell
138.50, 138.60, 138.70 with SL 139.00

Now, lets say your TP is 138.10

What can happen is, your first order hits TP, retraces for bullish
And picks up your remaining to order and moves them in P/L Negative:(

But with linking, you can cancell the remaining orders when TP is hit.