The calmest mood should be at Celtic.
That cushion matters. In qualifying ties, scoreboard pressure can force caution or panic. Celtic have earned the luxury of control, and that is often the biggest advantage of all at this stage of the season.
The picture is tighter elsewhere.
Each tie carries a different tension. Rangers have the lead, but a one-goal margin leaves little room for a flat spell. Hearts are in the most open contest of the lot, with the first leg already showing how quickly momentum can swing. Hibs, by contrast, have kept the tie alive and now get the chance to settle it on home soil, where patience could be as important as ambition.
For Motherwell, the challenge looks toughest.
A two-goal deficit away from home is the hardest position any Scottish side takes into these return games. It does not make qualification impossible, but it sharply narrows the route.
The next few nights will shape the early season for all involved. Celtic can look ahead with confidence, but for the rest the story is simple: one strong performance could extend the European campaign, and one bad half could end it.