Second-half goals from Bernardo Silva and Ilkay Gundogan earned Manchester City a hard-fought 2-0 win over Aston Villa at the Etihad Stadium on Wednesday. The result saw Pep Guardiola’s men overtake Leicester City at the top of the current Premier League standings.Man City make it 6️⃣ #PL wins in a row#MCIAVL pic.twitter.com/4wgIn16OKc— Premier League (@premierleague) January 20, 2021The hosts, who enjoyed the majority of the possession in the first half, struggled to break down an extremely well-organized Villa outfit that formed an extremely effective defensive shield in front of their goal.After a similarly bright start to the second half, City finally broke the deadlock in the 79th minute. Rodri dispossessed Tyrone Mings on the edge of the Villa penalty area before setting up Silva, who fired a clinical left-footed effort past the impressive Emiliano Martinez.20 - Bernardo Silva has scored his first Premier League goal at the Etihad Stadium in 20 appearances, since scoring a hat-trick against Watford in September 2019. Swerve. pic.twitter.com/Tqsi41qX17— OptaJoe (@OptaJoe) January 20, 2021Gundogan then sewed up the points from the penalty spot after Matty Cash was adjudged to have handled in the box. The German calmly sent his penalty down the middle of the goal.The win sees Manchester City go top of the league table on goal difference. Their local rivals Manchester United have the opportunity to overtake them with a win over Fulham later on.On that note, here are the five major talking points from Manchester City’s eventful 2-0 home win over Aston Villa.#1 Aston Villa were finally able to field their first team againAston Villa fielded their first-choice playing eleven after an absence of almost three weeks.No team in the English top-flight has been as severely affected by the COVID-19 pandemic. Dean Smith’s side have fallen behind their contemporaries after an outbreak at their training camp left them unable to take to the field for almost three weeks.As a result, this game against City was just Villa’s third game this month. The New Year’s Day encounter against the other Manchester club and the FA Cup clash against Liverpool - where they fielded their academy products - being their other two games of 2021.While the senior squad have had the advantage of an unexpected break in the middle of a quite hectic season, they have built up a bit of a backlog of fixtures going into the second half of the season.However, a couple of extra midweek fixtures to get back on level terms is not likely to be as much of a problem this season, with the schedule more congested than it has ever been.The Villa players might even benefit from the extra rest in January while their peers plow on - a factor that might give them a slight advantage going forward.#2 Manchester City’s run of form sends an ominous message for the rest of the leaguePep Guardiola's side are on a run of nine straight wins in all competitions.The victory against Aston Villa makes it nine wins in a row for Pep Guardiola’s side. Manchester City last dropped points in the league all the way back in mid-December and tasted defeat in late November.What makes their run of form even more impressive are the amount of clean sheets that they have racked up along the way. The new-look Manchester City defense has looked virtually unbreachable in recent months.Man City's record when John Stones and Rúben Dias start together this season:11 games10 wins10 clean sheets1 goal conceded (!!!)Rock Solid. 🪨 pic.twitter.com/N88dKu92Lx— Squawka Football (@Squawka) January 20, 2021A shaky start to the season gave rise to conversations that Manchester City might not be in the title race this season. It even led to rumors of Guardiola’s impending exit. However, the former champions have made a remarkable return to form.As such, given Manchester City’s current form, it would take a Herculean effort for opponents to stop them, which is why they have suddenly risen to the status of title favorites.