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Verilog, FPGA, and ASIC design loops.
Name the clock and what it was costing, say which facts you had and which you chose not to wait for, classify the call as reversible or not, act at the level you were authorised to and say so, and record the reasoning at the time so it can be judged on what you knew.
Substitutability is a claim about behaviour, and signatures carry none of it. A subclass that rejects an argument its supertype accepted has strengthened a precondition, which the compiler cannot see: the code type-checks, and it breaks callers that were written correctly against the base type.
Show that you understood the other team's priorities before deciding they were unreasonable, that you made the cost visible in their terms and in writing, that you offered to absorb some of the work, and that any escalation went through their manager with them present.
Show that you made the ambiguity smaller before you started coding, that you wrote down the assumptions you were proceeding on, and - for the deadline half - that you renegotiated scope early with evidence rather than absorbing the pressure silently and missing the date.
Own the change that caused it, walk the timeline from detection to recovery in real minutes, separate your mistake from the system that let it through, and say which fix is still in place today. Interviewers score the honesty of the timeline before the cleverness of the fix.
Pick unasked work that solved a problem other people were feeling, show that you sized it before starting and told someone you were doing it, and be able to say what you chose not to fix — unsanctioned effort only reads as initiative when it was also disciplined. Use this ownership answer to show the decision, trade-off, and evidence rather than a memorised definition.