RNRB / TNRB and Life Interest Trust

H dies leaving a life interest in favour of W (2nd marriage) with his children being named as remainder bens. H is the sole owner of the property. W has now died and the Trust aggregates with her estate. The property is worth £800k. Can W’s Executors claim both the RNRB and TNRB totalling £350k?

TIA