Six of Celtic's upcoming seven games are outside of Celtic Park.
Now their European journey is over, Celtic are now staring down a season-defining fortnight.
By 14 March, they might be cruising in the league with the wind at their backs and through to the Scottish Cup semi-finals.
Or, they could be still struggling to retain the championship and facing the prospect of a silverware-free campaign.
The first stop is Ibrox on Sunday for a titanic league match, with Celtic behind Rangers by a couple of points having played one match fewer, with Hearts six clear of the title holders.
This is followed by a journey in midweek to Aberdeen, before heading back to Ibrox in the Scottish Cup quarter-final and then hosting high-flying and tough Motherwell.
A half-dozen of their next seven matches are on the road compared to Celtic Park. This much-maligned Celtic team is about to be put under severe pressure after a tumultuous opening months of the season.
"We can expect a lot of surprises and changes," commented a former Celtic defender. "I wouldn't be surprised if the league is decided on the final day. But they will have to do it over the next five or six games. You have to be relentless, otherwise they won't take the trophies."
Manager Faces Selection 'Conundrum'
Despite the 1-0 win over Stuttgart proving moot in Celtic's bid to reach the knockout stages of the Europa League, it could yet prove significant.
The manager rotated a large number of his starting line-up and some of the fringe players put in eye-catching displays to secure the club's first ever win in Germany.
Luke McCowan calmly slotted the winner after under half a minute and played positively, while in the back four, several defenders stood out in a resilient performance.
Murray especially made his case to start alongside Liam Scales. One magnificent block stood out and he was assured when defending corners.
But the most talked-about performance was saved for second-choice goalkeeper Viljami Sinisalo as he contributed significantly in a first Celtic clean sheet in half a dozen games.
The established goalkeeper has been under heavy criticism after a series of errors. The Finnish stepped in and made six saves, in a display labeled "perfect" by a former Celtic midfielder.
A former Celtic goalkeeper is of the opinion Sinisalo performed well enough to start against Rangers on Sunday.
"He had some excellent saves and looked calm when he had the ball and had good anticipation," was the assessment. "The manager has a tough call to make at the weekend. On that performance, I would be starting him. Give him a run in the team now."
The Celtic manager conceded that several players have given him "food for thought".
"[Sinisalo] was outstanding in the game, exceptionally. That's the name all round the dressing room," the manager commented. "He's got plenty of talent."
Viljami Sinisalo staked his claim to be in the lineup against Rangers on Sunday.
'Critical' Rangers Challenge Awaits
The other benefit of Celtic's win was that they showed they can grind out a victory.
Over the years, Celtic have arrived and typically sought to dominate the ball from start to finish against every Scottish rival.
But this more fragile side had looked more and more susceptible this year, often conceding more than one goal per game.
Without a victory at Ibrox in four attempts and given Rangers have won their last ten home matches, a show of resilience in Germany was timely.
Could Celtic take a somewhat more cautious approach? At this moment, it is solely concerning winning.
"You don't need to have all the possession to win the game," noted an pundit. "You've got to put in the effort, be solid at the back, get a bit of luck and have a good goalkeeper."
"Celtic have struggled for form this season, but they are hanging in there [in the league]. They still have a chance, with a match to spare. The players will take great confidence from tonight - the weekend will be a critical one."
