Hi Nick_Pyner -
Perhaps you might not have exposure to Industrial environment and number of production blocks, so your comments are appropriate.
I, did carry out POC with seven blocks of production halls - chaining the arduino through HC05 - data is reaching the serial monitor on PC, concept is absolutely working.
Upcourse draw back is, if one of the Arduinos/HC-05 fails units at the back of the failed unit goes out of loop but one's ahead are still able to send the data.
Thanks, problem is resolved