Sunday's shock defeat to Aston Villa aside, Arsenal's Champions League performances have been in stark contrast to their controlled, dominant displays in the Premier League this season, where they have shown mettle and maturity.
Their European forays have delivered nervy performances where they have looked vulnerable to every attack, with some players wilting in the intense and hostile atmospheres the competition is famed for.
The Gunners' group-stage draw arguably should have yielded six wins from six games as they were pitted against PSV, Sevilla and Lens. However, in France, Arsenal relinquished a lead to slip to a humiliating 2-1 defeat to the overachieving Ligue 1 team - albeit via two stunning goals. Arteta's men then edged Sevilla away, but were unable to best PSV in Eindhoven having already qualified, once again allowing their opponents back into the game.
In the last 16, the north Londoners were pushed all the way by unfancied Porto, losing at the death in Portugal after a blunt and nervous display, before being unable to see their stubborn opponents off in normal time in the second leg in London, eventually prevailing on penalties.
At times they have looked every bit a side that is inexperienced this level, lacking any sort of European authority, with this their first Champions League campaign in seven years.
Having been in control of the first encounter with Bayern, leading through Bukayo Saka's effort, Arsenal conceded two wholly avoidable goals - first through an error from Gabriel and goalkeeper David Raya, before William Saliba conceded a penalty after Leroy Sane's run had been allowed to dissect the Arsenal defence - to hand their visitors the initiative, with Die Roten looking far more comfortable on Europe's biggest stage for the most part despite being considered underdogs.