Traditionally, international sides have played six games across three windows – all of which have featured two fixtures – in September, October and November.

But for the first time this year, the September and October breaks were merged.

Wales’ hopes of coping with the new schedule were not helped by a string of injuries, with stars such as Karl Darlow, Joe Rodon, Dylan Lawlor and Harry Wilson missing the entire camp and David Brooks dropping out of the squad after defeat by Portugal in the opening game.

Bellamy said Dan James was not fit enough to play against Denmark after he was left on the bench at the Cardiff City Stadium, and acknowledged Ben Davies probably should have been rested after he was withdrawn late on.

“If we have a few injuries, which we had more than one or two, they miss four games,” said Bellamy.

“We can deal with two, do you understand? And then the squad will get really tested. The intensity of the squad, the athleticism, really I think [the four-game break] is designed for the elites.

“[They can] say, we can go, we can go, we can turn over these games really, really quickly and we can change, we can change [the team] like for like because we have the numbers. So, it puts a real stress on a lot of us.”

Republic of Ireland head coach Heimir Hallgrimsson said he felt Israel were “trying to intimidate” his team amid allegations of spitting during Sunday’s tense Uefa Nations League draw.

The teams clashed at half-time in the 1-1 draw behind closed doors in Serbia, with the Irish Times, external reporting that Republic of Ireland head of athletic performance Damien Doyle alleged he had been spat at by an Israel player.

On television pictures, a voice can be heard saying “he spat on me!” as the players made their way down the tunnel at TSC Arena.

“I don’t want to get involved in that, but it’s been like this these two games. It’s tense, it’s a lot of emotions,” Hallgrimsson told Off The Ball, external when asked about the incident.

“[It] was an accusation of spitting on someone but I didn’t see it. No, we don’t want to talk about this, this will just be reviewed probably like everything else that’s happened between the two teams.

“I felt like they were trying to intimidate us from kick-off but I give a lot of credit to the players to stay calm. It could have been a game of yellow and red cards but we were composed, the players were composed, they did well in controlling emotions.”

Asked about the half-time incident, Israel head coach Ran Ben-Shimon said he did not see “anything”.

“[At] half-time I was in the dressing room, my room, with my staff,” he said.

“I didn’t see anything. When I get the chance to check I will get back to you. I didn’t see anything, I was in my room.”