Not until you are.
Routings can change, and whilst HSBC are unable to give you a definitive break down of charges, you can't know for sure that additional intermediary bank charges won't roll in after the event.
That's why I will stick with Wise, who clearly lay out what the exchange rate is, what their charges are, and exactly how much money will arrive at the destination account. No small print about maybe someone taking a bite of the cake after I press the send button.