CSS make rows same height with FlexBox

I'm trying to build a complex 'table' style layout with Div and FlexBox. The page is using Bootstrap 5.2.x for the main layout.

Check out my test page

I am trying to make the 'rows' the same height across. So the middle single row will stretch to the full height of the 'table' to the left.

I've tried a number of different variations of layouts and CSS but no success! :-(

Can anyone offer any advice or examples? This is the visual:

My table code is shown below.

<div id="shrpa-table-container" class="link-id-45594 cat-id-10223 tlcat-id-10223"><h3>Aircraft information</h3><div class="row"><div class="col col-md-5 shrpa-table"><div class="shrpa-table-title"><h4>Aircraft size and type</h4></div><div class="shrpa-table-rows"><div class="shrpa-table-row shrpa-table-pad"><span class="shrpa-table-caption">TurboProp</span><span class="shrpa-table-value"></span>               </div><div class="shrpa-table-row-alt shrpa-table-pad"><span class="shrpa-table-caption">Light Jet</span><span class="shrpa-table-value">Cessna Citation CJ2+, Cessna Citation CJ3+</span>             </div><div class="shrpa-table-row shrpa-table-pad"><span class="shrpa-table-caption">Mid Jet</span><span class="shrpa-table-value">Embraer Legacy 450, Embraer Praetor 500</span>              </div><div class="shrpa-table-row-alt shrpa-table-pad"><span class="shrpa-table-caption">Super Mid</span><span class="shrpa-table-value"></span>               </div><div class="shrpa-table-row shrpa-table-pad"><span class="shrpa-table-caption">Heavy Jet</span><span class="shrpa-table-value"></span>               </div></div></div><div class="col col-md-2 shrpa-table"><div class="shrpa-table-title"><h4>Aircraft age</h4></div><div class="shrpa-table-rows"><div class="shrpa-table-row shrpa-table-pad"><span class="shrpa-table-value">3 years</span>          </div></div></div><div class="col col-md-5 shrpa-table"><div class="shrpa-table-title"><h4>Aircraft independent ratings</h4></div><div class="shrpa-table-rows"><div class="shrpa-table-row shrpa-table-pad"><span class="shrpa-table-caption">Argus rating</span><span class="shrpa-table-value">Platinum Rating</span>         </div><div class="shrpa-table-row-alt shrpa-table-pad"><span class="shrpa-table-caption">Wyvern rating</span><span class="shrpa-table-value">Wingman Pro</span>            </div><div class="shrpa-table-row shrpa-table-pad"><span class="shrpa-table-caption">ISBAO</span><span class="shrpa-table-value"></span>           </div><div class="shrpa-table-row-alt shrpa-table-pad"><span class="shrpa-table-caption">Other rating</span><span class="shrpa-table-value"></span>            </div></div></div></div>