The phrase "same hallway" means that two or more people are in a shared space or situation. They are experiencing or going through something together. Full definition
Fire alarms went off at Stoneman Douglas High School late Wednesday afternoon, signaling teachers and students to fill the same hallways which expelled student Nikolas Cruz had entered with an AR - 15. (relevantmagazine.com)
Everybody rips the Buffalo Bills for four consecutive Super Bowl losses, but the Broncos hang in the same hallway — they lost their first four Super Bowl appearances, the last three by 55 - 10, 42 - 10 and 39 - 20. (sbnation.com)
They have had to use epi - pen by simply being in the same hallway as peanut product. (smarttereachday.com)