Minutes after England survived a World Cup scare against DR Congo to squeeze into the round of 16, the focus shifted to what’s next for the Three Lions.But it was not the threat of the in-form Mexico team that made the most noise, but the challenge of playing at the Azteca Stadium, the iconic football venue that can take your breath away, quite literally.Recommended Stories list of 3 itemsend of listThe Mexico vs England match on Sunday evening in Mexico City is the most talked-about fixture of this knockout round, with the discussion ranging from the change in kickoff time to the high altitude posing a huge challenge and the risk of adverse weather.Al Jazeera breaks down the possible impact of those things on England’s chances of reaching the quarterfinals:What time is England vs Mexico?The match will kick off at 6pm on Sunday in Mexico City, which is 1am on Monday in London (00:00 GMT).Why did FIFA consider changing the England vs Mexico kickoff time?On Friday, media reports in the United Kingdom and Mexico said governing body FIFA was planning to move the kickoff at the Azteca Stadium from 6pm local time to midday due to concerns over forecast storms and flooding in Mexico City on Sunday.But FIFA decided to stick with the scheduled time, as bringing the Mexico vs England game forward would have also meant delaying Brazil vs Norway on the same day in New York/New Jersey.Why is Mexico City one of the toughest World Cup venues?The 80,000-odd capacity Azteca Stadiu …