Brilliant as Wales were against North Macedonia, the performance was not without its blemishes.
The visitors’ goal was alarmingly simple, with one pass from their own half splitting the Welsh midfield and defence to allow Bojan Miovski time and space in the penalty area to finish.
That was not an isolated incident during the campaign. One drawback of Wales’ enterprising style under Bellamy is the way in which it can leave them defensively vulnerable.
Group winners Belgium exposed that frailty, scoring eight goals during their two victories over Wales.
The Belgians’ 4-2 triumph in Cardiff was the starkest illustration. Wales enjoyed plenty of possession but left an alarming amount of space behind for the likes of Jeremy Doku, who cut loose at Cardiff City Stadium.
Bosnia do not possess the same firepower as Belgium, but Wales cannot afford to gift their opponents those opportunities.
“A chaotic game will not suit us, it suits them,” said Bellamy. “It’s very important that we’re able to move the ball, wait for the openings, and then find the openings.
“And if we do look for the openings, make sure we’re compact enough because, if we don’t, we leave space.”
Cut out the individual errors and lapses in concentration and the home side should be confident of progressing against opponents 36 places below them in the world rankings.
At home and with Bellamy’s words of encouragement ringing in their ears, Wales believe they can beat anyone.
“Bosnia are defensively well organised, very good individual players who are playing with very good teams,” said Bellamy.
“It’s what we do during the game, how we adapt. We have to be patient. We’re experienced enough to smell the game, see what’s happening during the game, to be able to react.
“Do you know why I’m calm? Because we’re such a good team.”