Wyborcza writes 'The TBM that will bore the tunnel is still not working. By "a particularly acute problem" '. ' A month after the TBM shields were put into operation, which was watched by PiS officials at the end of last year, the machines were to set off behind their starting chambers.'

https://lodz.wyborcza.pl/lodz/7,35136,26938490,sciana-od-ktorej-odepchnie-sie-tarcza-drazaca-tunel-srednicowy.html

Łódź cross-city tunnel: PLK status report is particularly interesting:

Over the Łódź cross-city tunnel was postponed by more than a month, Rynek-Kolejowywe sent questions on this matter to PKP PLK but did not get answers. Is the problem caused by the contractor? Investor? (or I am asking maybe technical with the TBM?)

https://www.rynek-kolejowy.pl/wiadomosci/lodzki-tunel-srednicowy-raport-plk-o-stanie-prac-101758.html